It’s official: outdoor gardens are in full swing. Those plants that just a few weeks ago were tentatively stretching out in the sun are now finally in full bloom, unfurling buds and trichomes like there’s no tomorrow. At this point—and you already know this—base fertilizer falls short. The plants crave more. More phosphorus, more potassium, more energy to fatten those flowers, harden those buds, and sparkle with diamond-like trichomes.

And that’s where PK supplements come in, those additives that allow your plants to show their full potential at this important stage and become the queens of the garden. If you grow outdoors, the time is now. If you grow indoors, you’ll need them soon: this is the tool that makes the difference between a good harvest… and one you’ll proudly show off.

Phosphorus and potassium: two key elements in flowering

Let’s get serious: Phosphorus (P) and potassium (K) are the two elements that lead the charge during the flowering phase, allowing your plants to form huge, tight buds. They’re like your plants’ personal trainers: they won’t make them flower faster, but they will boost their yield to its peak.

Phosphorus promotes the development of secondary roots and improves energy transport within the plant. It’s responsible for ensuring your flowers develop with structure, consistency, and without sluggishness. Without phosphorus, the plant begins to look dull, failing to form those huge colas you love so much.

Potassium, for its part, regulates the opening and closing of stomata, participates in sugar synthesis, and helps the plant withstand stress, pests, and even the summer heat wave. It’s also essential for the accumulation of essential oils and terpenes, which results in more flavorful, aromatic, and long-lasting flowers.

The moral? Without P and K, there’s no paradise. Or at least not one worth bragging about on social media and among your colleagues.

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What are PK boosters?

By now you’ve probably guessed it, but let’s put it into words. PKs are nutritional supplements designed specifically for the flowering phase. They don’t replace base fertilizers, but rather complement them, reinforcing the supply of phosphorus and potassium just when the plant needs it most. Combined with a good base fertilizer, they become the ideal complement to get the most out of your plants. You’ve been nurturing them for months, so the smartest thing to do is make sure they provide you with as many dense, fragrant flowers as possible.

There are many types of PK supplements: liquid, solid, water-soluble, organic, mineral, bio-mineral, adapted to coco, hydroponics, or Mother Earth. Some are applied throughout flowering, others only in the final phase (that sprint where every drop counts). What they all have in common is their ability to stimulate the formation of larger, more compact, heavier, and resin-laden flowers.

Now, be careful with the dosage: overdoing it with a PK can be as harmful as underdoing it. The EC can skyrocket, and your plants can become saturated, locking out nutrients, or slowing down the process. So, the golden rule: always follow the manufacturer’s instructions as if they were a haute cuisine recipe. Don’t just “eyeball” them. Ideally, as always, you should monitor the amount of fertilizer you use with an EC meter; it’s the best way to avoid surprises and ensure you’re working with the ideal amount of salts for your plants. And the same goes for pH… providing large amounts of P and K will be useless if you do so with an incorrect pH value, as the plants won’t be able to assimilate this extra supply of these two elements.

Featured PK boosters in Alchimia

We know the market is rife with products promising “explosive flowering,” “XXL yields,” and “legendary terpenes.” But at Alchimia, we know how to separate the wheat from the chaff. We present some of the most effective, recommended, and, why not say it, charismatic PK supplements in our catalog. Each with its own unique characteristics, but all are highly effective and with which you’ll truly notice the difference.

Of course, we’re not going to tell you about the entire offering available in our store, but only about some of the products, so we invite you to visit it to learn more about PK additives and supplements that can help you achieve the perfect harvest, one that will leave you and your friends speechless.

Biotabs PK Booster Compost Tea

Ideal for organic growers with an alchemist’s soul. This supplement comes in powder form and is activated by preparing an aerated compost tea. Biotabs PK Booster Compost Tea contains bat guano, seaweed, and beneficial bacteria that release P and K gradually and sustainably. It not only improves flowering but also strengthens the substrate’s microbial ecosystem.

Directions for use: Apply between weeks 3 and 5 of flowering. Best combined with Orgatrex and Bactrex for complete organic synergy.

Biotabs Bio PK 5‑8

The liquid, biodynamic brother. Contains phosphorus, potassium, organic nitrogen, molasses, vitamins, enzymes, and phytohormones. Biotabs Bio PK 5-8 is a complete and balanced PK designed to stimulate flowering, resin, and flavor without disrupting the crop’s ecosystem.

Recommended dosage: 1 to 3 ml/L from the second week of flowering until root flushing.

BAC Organik PK Booster

For those who want to grow organically without sacrificing the best flavor and excellent yield. BAC Organik PK Booster is a liquid supplement containing plant extracts, molasses, and natural minerals. It stimulates flowering, strengthens cell structure, and improves flower sweetness.

Important note: Not suitable for automatic irrigation, as it may clog the pipes!

Bloombastic by Atami

A modern classic. With its PK 20-21 formula and a cocktail of sugars, minerals, and enzymes, Bloombastic is ideal for the mid- to late-flowering phase. It stimulates resin production, improves aroma, and boosts final weight without excessively increasing EC. Suitable for all systems.

Application: from the 4th week of flowering.

Rokzbastic from Atami

The hardcore version of Bloombastic. With PK 10-20, extra iron, and a higher concentration, Roczbastic is designed for final fattening of buds, leaving them rock-hard. Ideal for experienced growers who want to squeeze every last gram from their harvest.

Caution: Carefully monitor the EC value of the nutrient solution.

Athena PK Booster

From the USA comes this high-end mineral PK, with phosphorus, potassium, magnesium, and sulfur. Athena PK Booster is designed for cocoa or hydroponic crops, where maximum availability is required without disrupting the nutritional balance.

Dosage: 0.8 to 2.6 ml/L from week 3 of flowering.

Outdoor cannabis harvest: tips and tricks

A little push… that makes all the difference

You see, PK supplements aren’t just an extra; they’re a turning point. When the crop enters its decisive phase, what you give your plants is reflected—unfiltered—in the final result: denser buds, richer aromas, abundant resin, and a feeling of satisfaction as a grower that’s hard to describe.

The final piece of advice? Choose your PK based on your growing style, your environment, your goals… and let nature do the rest.

Happy harvest!

The post Boost your flowering with PK supplements appeared first on Alchimia blog.

We’re at a moment eagerly awaited by thousands of growers worldwide. And we’re not talking about the outdoor harvest, but rather the sweet prelude to the indoor season, when every grow room and cabinet is about to become home to plants laden with aromas and trichomes. Choosing quality feminized seeds is of great importance if you want to avoid disappointment with your first crop of the season, a bitter pill no one likes to swallow.

So today, we present five contenders ready to bring you lots of joy, chosen from the latest additions to our catalog. Prepare your indoor grow and get ready to choose the best option for you; as you’ll see, it won’t be for lack of new genetics!

The indoor season is just around the corner: choose wisely

We’re at that glorious moment in the cannabis calendar, when, as we close the window, we start to think about autumn and the start of the indoor growing season, which is rapidly approaching. After the rigors of the summer heat, one of the best times of the year for this type of growing has finally arrived, and there’s no better way to take advantage of it than by polishing your brand-new LED panel and choosing top-quality feminized seeds… like the ones we’ve just added at Alchimia.

Choosing your next strain wisely isn’t a trivial matter: it influences important factors such as the flavor and aroma you’ll enjoy over the coming months, the final yield you’ll achieve, the ease of cultivation, and the quality of the resin you’ll produce. So, we’re going to present you with five potential candidates to become the next queen of your garden.

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New features in Alchimia’s strain catalog

So without further ado, let’s take a look at five feminized seeds recently launched at Alchimia, all pedigree-bound and ready to make a difference in both your grow and your subsequent tasting sessions. Of course, this is just a small selection we’ve made to introduce you to some of the most promising new genetics, but you’ll find many more new features on Alchimiaweb. Get ready to get to know them up close and choose your next growing partner!

Sello – Mosca Seeds

Sello by Mosca Seeds is a refined hybrid of Dantes Inferno and Pink LemonAid that features a robust structure with good lateral branching, making it perfect for LST, FIM, or SCROG cultivation. Its powerful branches are capable of supporting colas as large as a forearm, dense and so covered in resin that they look like fresh snow. It flowers relatively quickly, taking about 58–60 days to complete, and its yield is simply spectacular, with maximum yields of +600 g/m² indoors and +1,000 g/plant outdoors.

Furthermore, it doesn’t require any special nutrition, being tolerant to both heavy and light fertilization, and adapting perfectly to the grower’s environment; ideal for expert growers who want to boost yield without stressing over nutritional balance, but also for inexperienced growers who want top results without complications. Its quality for resin extractions is also noteworthy, both in terms of quantity and quality, as its citrus profile makes it a gem for rosin and concentrates made with fresh plant matter.

Main features:

• Flowering: 58–60 days
• Yield: Very high (indoor +600 g/m², outdoor +1,000 g/plant)
• Ease of cultivation: Versatile in fertilization; responds well to pruning and SCROG
• Aroma: Powerful citrus terpenes, sweet/refreshing background
• Effect: Mental euphoria followed by physical relaxation
• Ideal for: Particularly aromatic extractions, intensive cultivation, lovers of powerful lemon.

Pluto Cookies IBL Auto – Ethos Genetics

If you’re looking for a premium autoflowering strain that’s stable and potent (>25% THC), check out Pluto Cookies IBL Auto by Ethos Genetics. Ready in around 70–80 days from germination, she’ll reward you with long, compact colas that are quite branchy for an auto and a unique, complex aroma that blends notes of gas, pine, and creamy coconut. She also delivers a consistent, even yield from plant to plant – a dream for those who love consistent grows, with plants that almost resemble clones.

Its growth is vigorous during the first weeks of life and also during the stretching phase, and it can double its height during the first weeks of flowering. It’s also easy to grow, perfect for both beginners and experts, and has an intoxicating aroma that you’ll enjoy both in bud form and in extractions.

Pluto Cookies IBL Auto is easy to manage in the garden, with great vigor and good productivity, and is an ideal autoflowering strain for extractions thanks to the large amount of resin it produces and its unique aroma and flavor.

Main features:

• Flowering: 70-80 days
• Yield: High (500–600 g/m²)
• Ease: Easy to grow, vigorous
• Ideal for: Energizing wake & bake, Rosin extractions, novice and expert growers.

Glowberry – Aficionado French Connection

The guys at Aficionado French Connection are back with another strain that promises a lot of joy: Glowberry. A cross between Brawberry and Vanilla Berry Pie, this new gem from Aficionado flowers in 8–9 weeks and is a true SCROG champion: long, productive branches with enormous, resin-laden buds that are truly eye-catching. It’s also a very productive strain under ideal conditions, with yields of up to 600 g/m² indoors and 1,000 g outdoors.

Glowberry by Aficionado French Connection responds very well to all types of pruning, including lesser-known techniques such as defoliation. It’s moderately resistant to the most common pests, but you should be careful with excess moisture during flowering, as the flower density is extremely high. Finally, we recommend using fresh leaves and buds if you’re making extractions, so you can enjoy a wider range of terpenes more faithful to the plant’s natural state.

Characteristics:

• Flowering: 8–9 weeks
• Production: up to 600 g/m² (indoor), 1.000 g/plant (outdoor)
• Aroma: red fruits, lemon, diesel, creamy nuances
• Ease: medium-high, ideal for experienced growers

Common mistakes when growing with LEDs

Zahemi – Perfect Tree

Perfect Tree’s Zahemi is an aromatic hybrid of Yahemi (Grandiflora Genetics) and ZaïZaï, another Perfect Tree strain known for its intense Z-terpene profile and delicious resin. Zahemi grows vigorously and stretches quite a bit when flowering, so it’s best to plan your plants’ final height carefully, especially if you have limited space height or are growing under HPS or CMH lights.

If this strain stands out for one thing, besides the quality of its buds (otherwise, we wouldn’t recommend it!), its ease of cultivation. It thrives in all types of environments and is resistant to common pests, provided basic hygiene is maintained during cultivation, of course. Its phenotypes are very stable, making it very reliable for producing buds and extracts with stable and uniform qualities. Thanks to its extremely high resin production, it’s a simply spectacular plant for making concentrates like rosin or bubble hash.

Characteristics:

• Flowering: 8–9 weeks
• Yield: 500–600 g/m² (indoor), 700 g/plant (outdoor)
• Aroma: sweet grapefruit, tropical fruits
• Ease: high, suitable for all levels

Insane OG – Barney’s Farm

Insane OG by Barney’s Farm is a powerful three-way cross between legends like OG Kush, Bubba Kush, and Granddaddy Purple. The result of Barney’s collaboration with legendary hip-hop star B-Real of Cypress Hill, this strain stands out for its extreme potency (27% THC) and intense flavor, which perfectly embodies the characteristics of classic Kush.

The structure of this strain is compact and robust, withstanding pruning, training, and staking well. It has good resistance to mold under optimal conditions, although caution is warranted during advanced flowering, especially if your environment is humid. Last but not least, the intense Kush terpenes it produces have the ideal nuances for making both traditional hashish and the more modern Dry Sift, not to mention other types of extractions.

Characteristics:

• Flowering: 55–65 days
• Yield: up to 600 g/m² (indoor), 1.000 g/plant (outdoor)
• Aroma: Earthy, spicy, berry Kush
• Ease: medium, welcomes hands with some experience

Whether you’re looking for a fast cycle, competitive potency, bakery-worthy aromas, or resins to remember for a long time, these five varieties are a direct ticket to a memorable indoor season. You provide the light, substrate, and care; these magnificent genetics will provide the rest.

Happy harvest!

The post New premium varieties at Alchimia appeared first on Alchimia blog.

There are seed banks that emerge, making a greater or lesser impact on the market, and then there’s In House Genetics, which arrives like a whirlwind of innovation and sophistication with its excellent genetics. Its catalog could be the cannabis equivalent of a haute cuisine menu: unique flavors, surprising aromas, and a level of detail that brings a smile to any grower, from the most casual to the most demanding.

At Alchimiaweb, we wanted to make things easy for you and have incorporated several of their most recent creations. The result? An irresistible menu of genetics with a unique character. Join us on this journey through the history, philosophy, and, of course, the new stars of the In House Genetics catalog. You won’t regret it!

Origins of In House Genetics

In House Genetics was born in the United States, the birthplace of many of the most celebrated genetics of the last decade. Its team, led by Brandon and obsessed with excellence, has built a bank where experimentation with new phenotypes is the norm. Their approach? Combining legendary lineages, such as Gelato or OG Kush genetics, with less common genetics to create unique hybrids with overwhelming personalities.

This dedication to meticulous selection of the plants used in their projects has led In House Genetics to establish itself as a global leader. Not only have they gained a following among professional growers, but they’ve also earned the respect of collectors seeking unique flavors, potent effects, and genetic stability. A combination that doesn’t come about by chance: behind it are years of testing, discarding, and a whole lot of passion for the plant.

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In House Genetics news on Alchimiaweb

Black Cherry Flambe

A strain with a dessert name and a champion’s soul. Black Cherry Flambe is a hybrid of Orange Flambé and Black Cherry Honey that stands out for its terpene profile, loaded with notes of black cherry and a sweet undertone reminiscent of caramelized flan. Its structure is compact, with dense buds and dark tones flecked with violet hues, a true visual spectacle. It’s an ideal plant for those looking for a balanced effect: relaxing enough to unwind, but without losing focus. In cultivation, it responds well to pruning and high-yield techniques, being versatile and truly productive both indoors in grow rooms or tents and outdoors in greenhouses. If you’re looking for new flavors and outstanding yields, Black Cherry Flambe will give you plenty of joy!

Dolato S1

The pampered daughter of two heavyweights: Do-Si-Dos and Gelato #41. Dolato S1 offers a festival of flavors that range from sweet biscuit, floral notes, and a touch of spice, a combination we’re sure will win you over. Its effect is relaxing, with that warm sensation that invites tranquility, but without leaving you glued to the couch. Additionally, and as is usual with In House Genetics varieties, it is an excellent producer of glandular trichomes, making it a perfect candidate for lovers of concentrates and resin extractions. Its structure is compact and robust, and it appreciates a stable climate to unleash its full potential and surprise you with its spectacular buds.

Crystal Cookies

A hybrid that fuses the sweetness and potency of its parents, Animal Cookies and Platinum. Crystal Cookies by In House Genetics is known among its fans for its appealing, freshly baked cookie aroma with a soft, earthy undertone and a crystalline finish on its buds, courtesy of its high resin production. It’s perfect for growers looking for easy-to-manage plants that respond well to different pruning techniques and flower relatively quickly, in about 9 weeks. Its effect is twofold: first, a cheerful mental boost, and soon after, an intense and very pleasant physical relaxation. One of those ideal genetics for home movie sessions, or even for artistic activities, where you can let your imagination run wild.

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Bananacane

Without a doubt, this is a true tropical gem with a personality as sweet as it is attractive. Bananacane is a cross between Bluenana and Slurricane #23 that manages to combine the fruity and exotic profile of ripe banana with a hint of cane candy, an aroma that turns each puff into an unforgettable experience. This is a robust plant with strong branches and a generous yield, perfect for indoor cultivation, although equally suitable for outdoor use. Its potency is high, with an initial energizing effect and a subsequent gradual descent into mental and physical relaxation. Ideal for those seeking distinct, unusual flavors, and also easy to grow.

Garlic Storm

This is one of In House Genetics’ most daring offerings. Garlic Storm is not for the faint of heart: its terpene profile is intense, very intense, with nuances of garlic, spices, and fuel. It’s a backcross between Slurricane and GMO, a strain famous for its distinctive flavor and aroma. A unique strain that stands out in both aroma and effect, potent, perfect for experienced consumers seeking intense sensations. In cultivation, it displays good resilience and is capable of producing abundant harvests, especially in controlled environments. It’s a highly recommended strain for growers looking for minimal complications and outstanding results. A different option that broadens the sensory horizons of cannabis.

Upcoming strains from In House Genetics

All of these strains you’ve seen are now available on Alchimiaweb, ready to become part of your garden. If you’re into experimentation, seeking new flavors and effects, or simply enjoying genetic excellence, this is your moment. However, keep in mind that more new releases from this seed bank will soon be arriving at Alchimia, with tempting genetics such as the following:

• Black Cherry Punch (Purple Punch x Black Cherry Pie)
• Slurricane #7 (Do-Si-Dos x Purple Punch)
• Jelly Sickle (Purple Punch x Jelly Breath)
• Jelly Breath S1 (Mendo Breath x Dosidos S1)

And this is just the beginning: the In House Genetics catalog will continue to grow with new gems that will soon be available in our store. Equally surprising strains, with unique aromatic profiles and the same obsession with quality that characterizes this bank. Stay tuned, because the next addition could be your future favorite plant.

Happy harvest!

The post New In House Genetics strains on Alchimiaweb appeared first on Alchimia blog.

Happy Valley Genetics is a cannabis seed bank recognized for its expertise in developing premium strains. Based in the United States and created in collaboration with ETHOS Genetics, its goal is to offer stable, high-yielding genetics for both professional and amateur growers. Happy Valley Genetics’ priority is the creation of feminized and autoflowering strains suitable for indoor, greenhouse, or outdoor cultivation. Today, we introduce you to this new bank and some of the most attractive strains in its catalog, which are now available on the Alchimia website.

Happy Valley Genetics: powered by ETHOS

Happy Valley Genetics’ philosophy is based on innovation and quality. Each strain is developed through a rigorous selection process that enables the identification of the most outstanding phenotypes from a large number of plants. This maximizes the chances of discovering a unique plant with above-average characteristics. These phenotypes are selected for their unique cannabinoid and terpene profiles, genetic stability, and performance in cultivation. This approach guarantees reliable results, whether for high yields, intense flavors, or well-defined effects.

Happy Valley Genetics’ catalog features iconic strains, including Baller’s Game, a hybrid of Melon Baller and End Game #3, characterized by sweet, fruity aromas and dominant terpenes such as limonene and myrcene. Other genetics used in their crosses, such as White Wedding or the famous Super Lemon Haze, reflect their expertise, backed by prestigious awards such as the High Times Cannabis Cup.

In addition to its seeds, Happy Valley Genetics offers tools to assist growers, such as the Phenohunter app, which allows growers to efficiently manage and track the characteristics of their plants, helping them refine their search for superior genetics.

New Happy Valley Genetics varieties, available at Alchimia

We now invite you to take a look at the Happy Valley Genetics varieties available in our online store:

Another Level

Another Level is a feminized cannabis strain developed in collaboration with Ethos Genetics. This hybrid combines the GMO Zkittlez and End Game #3 genetics, producing vigorous, tall, and well-branched plants. It stands out for its generous yield and superior-quality flowers, ideal for experienced growers and resin extraction enthusiasts.

Main features:

• Aromas: Fruity and sweet with funky touches.
• Effects: Relaxing and powerful thanks to a high THC level (25-29%).
• Flowering: 9 weeks indoors; harvest in October outdoors.
• Genotype: Indica-Sativa balance.

Sweet 16

Sweet 16 by Happy Valley Genetics is a feminized indica-dominant strain (60% indica / 40% sativa), designed to offer a balance between potency and flavor. It comes from the cross of The Krux (ETHOS Cookies #16) and End Game #3, making it ideal for those seeking relaxing and euphoric effects.

Main features:

• THC level: Very high, between 24 and 26%.
• Aromatic Profile: Complex blend of fruit punch, pine, and floral notes.
• Flowering: Indoors, about 9 weeks; harvest in early October in temperate climates.
• Yield: Up to 730 g/m² indoors and more than 700 g/plant outdoors.

Pineapple Diesel Auto

Pineapple Diesel Auto is an autoflowering strain derived from the cross between Lilac Diesel and Pineapple Runtz Auto, two renowned genetics from Ethos Genetics. This hybrid plant combines a balanced indica and sativa profile, designed to produce compact, resinous flowers in a 10- to 11-week cycle.

Main features:

• Aromas and flavors: Fruity and citrus notes (forest fruits) with earthy, pine, and fresh wood touches.
• Effects: Intense and stimulating, ideal for daily use without causing drowsiness.
• Performance: Medium-high both indoors and outdoors, thanks to its adaptable structure.
• THC Level: High.

Everglades OG

Everglades OG is an autoflowering strain known for its premium quality. It is the result of crossing ChemD i95 and Pineapple Runtz Auto, both of which are renowned for their potency and complex aroma profile.

Main features:

• Fast-growing cycle: 70 days from germination to harvest.
• THC Level: High (19-26%).
• Performance: Medium-high indoors and outdoors.
• Aromatic profile: A blend of woody, herbal, and slightly “swampy” notes, with nuances of fresh green fruits.
• Effect: Relaxing, with indica predominance, offering a stone effect without excessive sedation.

Game Over

Game Over is a feminized hybrid strain known for its potency and intense flavors, derived from the Super Lemon Haze x End Game #3 cross. It’s ideal for experienced growers, offering a unique experience in both aroma and effect.

Main features:

• Type: Indica-dominant hybrid.
• Flowering: Approximately 9 weeks indoors; harvest in early October outdoors.
• Yield: High, with dense and resinous buds, ideal for extractions.
• THC Level: High, with potent effects.
• Aromas: Sweet, fruity, earthy notes, with nuances of citrus and kush.
• Effects: Relaxing and euphoric, perfect for nighttime use or deep relaxation.

Ultimately, Happy Valley Genetics isn’t just a seed bank; it’s a commitment to quality with a Californian accent: stable genetics, memorable flavors, and a love for the plant that’s evident from the seed’s germination to the final toke. A catalog designed for those looking for more than just pretty flowers; so, if cannabis excellence and discovering new flavors and effects are your thing, don’t hesitate to keep them on your radar.

Happy harvest!

The post Happy Valley Genetics Seeds, American Know-How appeared first on Alchimia blog.

The history of this North American cannabis seed company, Brothers Grimm, is quite uncommon, especially if we take into account the huge success of their strains since they were first introduced in the market in 1996. Indeed, and before their withdrawal from the seed market in 2002, some of their genetics had already become true classics in the cannabis scene, with names that will surely sound familiar to you: Cinderella 99, Apollo 13, Killer Queen, or Rosetta Stone, just to name a few. Over time, these varieties have also become the baselines for many other hybrids from breeders across the globe.

The number of awards won by both Brothers Grimm Seeds varieties and other strains developed from their genetics is simply astounding. But, how did it all start? Let’s take a look now at the origins of this company, their flagship genetics, and, of course, the exclusive interview with MrSoul!

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Origins of Brothers Grimm Seeds

It all started when MrSoul – one of the founders of the company – contacted the Dutch seed bank Super Sativa Seed Club in 1987. Soon after, he was already distributing their seeds throughout the American territory. The access to new and amazing genetics, as well as his knowledge on engineering (he had studied nuclear engineering in New York) made him decide to dedicate his time to growing and breeding cannabis, also designing his climate control and hydroponic systems.

During the mid-90s, MrSoul, Duke Diamond, and Subcool met each other through the popular forum Overgrow, which brought together some of the best cannabis growers in the world. Thanks to all the knowledge shared in that forum, MrSoul and his partner, Sly, founded Brothers Grimm Seeds, while Subcool – founding member of Overgrow, started his own seed company, TGA Subcool.

In this way, and thanks to the breeding technique called cubing (or triple backcross), they soon had a nice collection of stable, quality genetics. In some cases, they came from bagseed found in dried buds, as is the case with Princess, Café Girl, or Genius. Indeed, these three parents used by Brothers Grimm Seeds actually came from seeds found in a Jack Herer bag purchased by MrSoul himself in 1997 at the “Sensi Smile Coffeeshop”, in Amsterdam. Ultimately, these plants were used as main parents to create Cinderella 99 (Princess), Rosetta Stone (Café Girl), and the Apollo line (Genius).

When things seemed to work nicely, with a young seed company with impeccable reputation in the marijuana community, MrSoul and Sly had to cease their activity for safety reasons. From there on, MrSoul tried to establish his business – without success – in places like Belgium, and it wasn’t until 2015 that he finally found a place in Colorado to develop his strains (mostly regular seeds) with his partner Duke Diamond.

Brothers Grimm Seeds news on Alchimiaweb

After decades cultivating myths and legends, Brothers Grimm has given us great joy and has once again made a statement with five new varieties now available on Alchimiaweb. And we’re not talking about simple seeds: as you’ll see from their parentage, we’re talking about high-quality pedigrees and flavors you’ll never forget. Plus, some of their new works are collaborations with the Trailer Park Boys.

Here, without further ado, are the five new products that promise to take you to a new dimension in terms of effects and flavors:

Bubble’s Blueberry F4

A tribute to the legendary terpene profile of the famous Blueberry: sweet, fruity, and with that creamy undertone that smells like a freshly baked blueberry muffin. As its name suggests, Bubble’s Blueberry F4 is the fourth generation of Bubble’s Blueberry, a plant that flowers quickly and produces buds denser than Russian literature. It’s also a very good yielder and offers a powerful, relaxing effect on both the brain and body, much appreciated by lovers of this type of sensation.

Ricky’s Hash Plant

Ricky’s Hash Plant is the result of an alliance between cannabis geniuses (Brothers Grimm) and other geniuses, in this case, of humor (the Trailer Park Boys). Impressive resin production, buds as sticky as a bug-catching strip, and that skunky-hashy profile that makes your mouth water just thinking about it. If you’re looking for good genetics for resin extractions, put this powerful hybrid of Genius, Puck, and Airborne G13 on your list… You won’t regret it!

Cinderella Purple

Cinderella Purple is a tribute to one of Brothers Grimm’s most distinctive strains, Cinderella 99 (often called C-99). This is a hybrid of Purple Urkle and Cinderella 99 that develops compact buds with good trichome production, one of those strains that catches your eye just by looking at them. Its aroma is floral and fruity, with an intensely balanced effect and an ease of cultivation that almost seems like a cheat. Perfect for beginners eager to try strains with top genetics and amazing results.

Ocifer

A limited-edition rarity for those seeking otherworldly flavors. Notes of earth, pepper, citrus pine… and in the background, spiced coffee with cheese and—yes, you read that right—a hint of fried chicken. As crazy as it is addictive. This is the result of crossing Cap Junky × Rosetta Stone, two plants that need no introduction. Ocifer is also fast (about 60 days of flowering) and productive, capable of producing over 500g of dried flowers per square meter of crop. A strain you can’t miss if you enjoy exploring new—and, we tell you, spectacular—flavors and aromas.

Airborne G13 S1

Airborne G13 S1 is another Brothers Grimm work with a true legend as its parent, the incomparable G13. It is, to put it poetically, a classic Indica that reeks of living cannabis history. Fast, powerful, and resinous like few others, it’s ideal for hash or rosin lovers, both for the quantity of its return and the quality of its extracts. One of those strains you can’t miss if you like to grow “revisited” classics, with a quality that will leave you speechless.

Interview with MrSoul from Brothers Grimm Seeds

Here you have our interview with the main breeder and founder of Brothers Grimm Seeds, MrSoul:

• A – After creating one of the most reputed seed banks of its time, you suddenly had to cease your activity. How did you cope with that? Was it really that hard to find another place to continue your work?
• MrSoul – I was not unhappy during the time away from growing and breeding because I had family and another vocation to lean on. It felt very strange, however, I kept asking myself: Why are you shutting down the money generator?? I moved to Europe in 2002 with hopes I’d find another growing facility, but it didn’t materialize after 2 years. I then returned to the USA to work as an engineer until 2015, when I realized it would be possible to reopen Brothers Grimm Seeds in a legal state, so I went to Colorado.
• A – I guess you must be pleased with the current situation in Colorado and other states of the USA, but…how do you think the current situation could be further improved for growers, retailers, and users?
• MrSoul – Well, in USA I see the major problem is the classification of Cannabis as a Schedule 1 drug and the fact that it remains Federally illegal despite individual states declaring it legal. That has to change ASAP for real legalization to be enacted.
• A – You developed C-99 from Princess and Shiva Skunk. What about the new version? Is it true that you used Princess and C-99 as parents?
• MrSoul – The Shiva Skunk was only used as the male in the P50 generation. The final “formula” to create C99 is Princess x C94, which is why the “new version” isn’t a new version; it is EXACTLY the SAME as in 1999.
• A – As you already know, I’m a great fan of Rosetta Stone, so I must ask…are you still keeping the original Café Girl? And the White Widow male? How have you developed the new Rosetta Stone?
• MrSoul – The Café Girl was culled in 2001, as was the White Widow. The New Rosetta Stone is far superior to the original. It’s a cross of Jack Herer to P75. And the feminized version is Jack Herer x C99 reversed.
• A – And what can you tell us about Killer Queen?
• MrSoul – Killer Queen is Airborne G13 x C99? What do you want to know that isn’t in the description on the website?

• A – We know you’re familiar with the cubing technique, which you’ve used to develop several strains. What do you think about feminization? Would you ever use this technique?
• MrSoul – YES, in fact, I’ve been very excited about the new 100% female seeds like Cinderella XX, Rosetta Stone XX, and soon to be released is a feminized version of DTC99.
• A – To what extent do you want to keep the genepool of your strains wide?
• MrSoul – I keep a very small gene pool and yet I’m able to create all the variations that I need to evolve my vision. I’d gladly do collaborations with other breeders who have a strain that would be a good parent with one in my genetic stables.
• A – Both you and your strains are true legends for many growers and breeders out there. I know curiosity killed the cat, but…any new strain on the plans?
• MrSoul – Absolutely !! I tend to announce new strains on Instagram (@brothersgrimmseeds) and on Facebook (MrSoul), and news spreads out from there. In addition to the feminized strains, I have created some heavier, Indica-dominant seed lines as well. And I have an S1 feminized version of Genius coming soon too.
• A – We love people like you to give some counsel to new growers about growing or breeding…what would you tell them?
• MrSoul – Define the REAL goal of your growing and keep it in mind wherever you are and whatever you’re doing. Don’t change what works. Don’t re-invent the wheel.
• A – Thanks a lot for your help and commitment. We really wish that you’ve finally found a place to continue your work…which we’ll enjoy for sure!!
• MrSoul – Thanks, guys! I have found a lovely place to continue my work and live in peace.

All the best MrSoul!!

The post Origins of Brothers Grimm Seeds and interview with MrSoul appeared first on Alchimia blog.

Some brands are born to fill a niche, and others are born to redefine it. In a CBD market where everything seems to have been invented, Only CBD enters the scene as that friend who doesn’t need to raise his voice to be noticed. Quality, design with personality, and, above all, a product collection that stands out for its unique characteristics.

Because we’re not just talking about flowers. We’re talking buds you could display in a showcase, resins that border on art, and trims that will allow you to enjoy the best flavor at a reduced price. Only CBD doesn’t try to convince you with incredible stories; rather, it does so with evidence, laboratory analysis, and a clear policy: less than 0.2% THC, but plenty of character and flavor. Today, we’ll tell you more about the Only CBD products you can now find at Alchimia.

Only CBD, a catalogue that speaks for itself

As we mentioned, Only CBD isn’t about quantity, but rather quality and the selection of the best buds and resins. Below are some of their best products:

CBD Flowers: The Classics with a Gourmet Accent

A delicious collection of CBD-rich buds grown in a greenhouse using organic farming practices. Available in 5g packs (excluding the Blue Cheese, which is 3.5g) for €20 per pack.

• Banana Smash Greenhouse – Dense buds with sweet, earthy aromas and citrus and fruity notes reminiscent of the best tropical cocktails. The CBD content is around 10%.
• Blue Cheese Greenhouse – For lovers of cheese with character. Great firmness and skunky aromas that honor its lineage. With 10% CBD, these are greenhouse-grown flowers.
• Mango Haze Greenhouse – The most photogenic strain in the catalog. A cross between the sweetness of mango and the seriousness of the best Kush. Its CBD content is around 10%.
• Amnesia OG Greenhouse – Yes, the legendary Amnesia also has a CBD-rich version. And it doesn’t disappoint, we assure you! Ideal for nostalgic individuals who don’t want to experience the potent psychoactive effects of this strain. Like the other available strains, its CBD level is close to 10%.

[productes tipus=”fitxa” cat=”605″ nfitxes=”3″]

CBD Resins: High-Quality Concentrates

High-quality CBD resin extracts. Ideal for hash lovers who only want to benefit from the properties of CBD without the psychoactive effects.

• Creamy CBD Fatty Resin – A white, fatty resin with a stunning appearance and a flavor to match. It melts like butter and tastes heavenly, with distinct sweet undertones. Its CBD content is around 20%, and it’s available in 2-gram format.
• Piatella Hash CBD – The “generational change” of CBD hashish. A premium resin with an exquisite texture and sweet, spicy, citrus, and earthy aromas typical of the finest hash. The CBD content is over 30%, and you can find it in 2 and 10-gram pieces.

Trim and Mini Buds: Savings without sacrificing flavor

• Dolce Trim Mix Indoor – A manicure made with premium indoor-grown strains. Ideal for those looking for quality at a good price or simply to fill the jar without emptying the wallet. With 10% CBD and a 10-gram package, this is the best option to enjoy while saving.

Transparency and scientific rigor

In a market rife with vague marketing and promises, Only CBD has chosen a different path: that of scientific rigor and complete legality. Each of its products is backed by independent laboratory tests, certified to verify both the CBD concentration and, especially, the THC level, always below the 0.2% threshold, making them completely legal.

But it’s not just about complying with the standards. It’s about going beyond. The packaging, for example, is a detail that betrays the brand’s philosophy: airtight, resistant, designed to preserve freshness and terpenes as if they were pure gold. Because a good bud poorly preserved is like a good wine poorly bottled: a sensorial crime.

A brand with soul… and community

Can a brand be relatable without being cheesy, technical without being cold, and passionate without seeming like a cologne ad? Yes. And Only CBD proves it with a proposal that combines years of experience in the sector with a modern and emotional vision of the hemp world.

Far from selling products like a screw-and-bolt shop, Only CBD aims to create culture, generate conversation, and foster the CBD movement. Its community—one that forms almost organically between demanding customers and curious people—is an active part of the project. From social media to specialized forums, there’s a constant dialogue with its audience, where they discuss strains, effects, textures… and yes, also legality, sustainability, and design.

This hybrid approach between cannabis tradition and more contemporary branding isn’t just a decoration: it’s the foundation of its identity. Because you can be cannabis-infused without falling into clichés. And you can do marketing without losing your soul along the way!

CBD, that old acquaintance

It’s no surprise that cannabidiol (CBD) is on everyone’s lips. What’s curious is how it’s gone from being THC’s shy brother to becoming the protagonist of a new narrative about wellness, legality, and science.

Although Only CBD products are not intended for human consumption, interest in CBD as an active ingredient continues to grow thanks to multiple studies exploring its potential anxiolytic, anti-inflammatory, and neuroprotective properties. From athletes seeking muscle relief to people who incorporate it into relaxation routines, CBD has found its place among modern self-care rituals.

Only CBD understands this evolution and embraces it with elegance. It’s not trying to ride the hype wave, but rather to consolidate a solid, honest, and stylish presence in a sector that still has much to tell. And that, dear reader, is much more than selling pretty flowers.

Enjoy them!

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References:

• Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects, Ethan B. Russo
• Cannabidiol use and effectiveness: real-world evidence from a Canadian medical cannabis clinic, Lucile Rapin, Rihab Gamaoun, Cynthia El Hage, Maria Fernanda Arboleda, Erin Prosk
• Therapeutic Efficacy of Cannabidiol (CBD): A Review of the Evidence from Clinical Trials and Human Laboratory Studies, Dennis J. Sholler, Lauren Schoene, Tory R. Spindlea
• Beneficial effects of cannabidiol from Cannabis, Sullim Lee, Yunjeong Lee, Yunseo Kim, Hyunji Kim
• CANNABIDIOL (CBD) Critical Review Report, World Health Organization

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