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The History of Brothers Grimm Seeds

Brothers Grimm Seeds was founded in 1996 by Rick Campanella, also known as MrSoul, and his partner at the time, Sly.

MrSoul had been deeply involved in cannabis and breeding since the 1980s. Brothers Grimm Seeds developed from this in the mid-1990s.

A pivotal moment occurred during a trip to Amsterdam. MrSoul discovered some seeds in Jack Herer flowers that he had purchased from Sensi Seeds. Several exceptional plants grew from these seeds.

Three of them would go on to play a crucial role in the later history of Brothers Grimm:

Princess, Genius, and Café Girl.

Princess gave rise to Cinderella 99. Genius became the foundation of the Apollo lines and later G13 Genius. Café Girl played an important role in Rosetta Stone.

Thus, a large part of the classic Brothers Grimm catalog is ultimately based on a very small number of exceptional plants.

That is exactly what makes the brand so genetically interesting.

Cinderella 99 – the Signature Strain of Brothers Grimm Seeds

Cinderella 99, also known as C99, Cindy 99, or simply Cindy, is the most important strain from Brothers Grimm Seeds.

The story begins with Princess, an exceptional plant that grew from a seed found in Jack Herer flowers.

MrSoul wanted to make the special characteristics of this clone reproducible in seed form. To do this, he developed a method he called cubing.

Princess was first crossed with a selected Shiva Skunk male. The following generations were repeatedly backcrossed to Princess.

This resulted in the P50, P75, P88, and P994 generations, one after another.

Cinderella 99 eventually developed from this process.

The goal was not simply to create a new cross, but to develop a seed line that would reliably pass on as many of the original Princess's characteristic traits as possible.

As a result, Cinderella 99 became one of the most famous cannabis genetics of the late 1990s.

The Importance of Cinderella 99 for Modern Genetics

The importance of Cinderella 99 extends far beyond Brothers Grimm Seeds.

C99 was incorporated into its own projects by numerous breeders over decades. As a result, the genetics can now be found in hundreds of documented crosses and subsequent generations.

The special appeal of the line lies in its combination of a compact plant structure, a relatively short flowering period, heavy resin production, and a tropical, fruity terpene profile.

Aromatically, Cinderella 99 is particularly associated with pineapple, tropical fruit, citrus, and funky, fruity notes.

Genetically, C99 thus became a kind of link between the classic Jack Herer/Haze world and more compact, faster-growing indoor genetics.

This exact combination made Cinderella 99 attractive to many later breeders.

MrSoul's Cubing Method

The development of Cinderella 99 illustrates MrSoul's breeding philosophy particularly well.

In so-called cubing, a special female plant is not simply crossed once. Instead, the offspring are repeatedly backcrossed to the original mother line over several generations.

This increases the genetic contribution of the original plant with each generation.

The goal is a seed population that reliably reproduces as many of the original clone's characteristics as possible.

This method was formative for Brothers Grimm.

Cinderella 99 thus became not only a successful strain but also an example of a systematic breeding approach that is closely associated with MrSoul's name.

Princess, Genius, and the Jack Herer Connection

Princess was not the only important plant to emerge from the legendary Jack Herer seeds.

Another selection was given the name Genius.

Genius also developed into a central breeding parent for Brothers Grimm Seeds.

The plant can be found in several historic lines and forms the basis of Apollo 11, Apollo 13, and G13 Genius, among others.

Thus, two completely different genetic families emerged from the same starting point.

Princess led primarily to Cinderella 99.

Genius, on the other hand, became the center of the Apollo and Genius lines.

This close genetic connection explains why many classic Brothers Grimm strains have a recognizable common thread despite their different names.

Apollo 11 and the Apollo Family

Apollo 11 is one of the best-known early Brothers Grimm strains, alongside Cinderella 99.

The line combines Genius with Cinderella 99.

This brings two of the brand's most important genetic pillars directly together.

Apollo 11 illustrates particularly well how Brothers Grimm worked with its own parent lines. Instead of constantly introducing new outside genetics, already selected plants from its own collection were crossed with one another.

Apollo 13 also belongs to this genetic family.

Apollo 13 descends from Genius and a P75 line from the Cinderella breeding program. This keeps this strain closely connected to the original Princess/C99 family as well.

Today, Brothers Grimm continues to carry Apollo genetics in its lineup and is developing it in feminized form.

Rosetta Stone – Jack Herer Meets Brothers Grimm

Rosetta Stone is also one of the classic signature strains.

The original line combines a selected Jack Herer plant with a P75 male from the Brothers Grimm breeding program.

This keeps Rosetta Stone genetically closely connected to the early Princess and Cinderella family.

The strain is more strongly associated with classic incense, jasmine, anise, musk, and Jack Herer terpene profiles.

In 2018, Rosetta Stone was included in High Times' selection of the ten most remarkable strains of the year.

This makes Rosetta Stone one of the lines that demonstrates how Brothers Grimm reinterpreted classic cannabis genetics without completely changing their original character.

G13 Genius – Two Legends in One Line

G13 Genius combines two particularly famous cannabis stories.

The strain is based on Airborne G13/Hashplant × Genius.

Genius brings in the Jack Herer-like Brothers Grimm side, while Airborne G13/Hashplant adds a significantly heavier, resinous hashplant component.

This makes G13 Genius stand out clearly from the more tropical and fruity Cinderella world.

Aromatically, the line leans more toward incense, earth, musk, hash, and spicy hybrid profiles.

G13 Genius remains part of the core Brothers Grimm Seeds lineup today.

Killer Queen – Cinderella 99 Meets G13/Hashplant

Killer Queen holds a special place because the original cross was not developed directly by MrSoul.

The strain was created by Vic High of BCGA.

The Airborne G13/Hashplant clone was crossed with a Brothers Grimm Cinderella 99 male.

Killer Queen thus combines two central genetic worlds once again: the fruity C99 family and heavy G13/Hashplant DNA.

The strain was later continued by Brothers Grimm Seeds itself and is now part of the lineup in both feminized and regular forms.

Killer Queen also demonstrates how influential Cinderella 99 was outside its own breeding program from an early stage.

Princess Haze and the Sativa Side of Brothers Grimm

Princess Haze plays an important role alongside Cinderella 99 and Apollo.

The line once again uses Princess, but combines this genetic foundation more strongly with haze-oriented cannabis genetics.

This shows a side of Brothers Grimm that is partially less visible in today's US market: more compact, specifically selected sativa and haze hybrids.

Strains such as Durban Thai x C99 or Thai Herer 99 also move in this direction.

This keeps the brand strongly connected to classic sativa, haze, and Jack Herer influences, while many modern US breeders have now focused much more heavily on Cookies, Candy, and dessert lines.

Grimm Glue – Classic Brothers Grimm DNA Meets Modern US Genetics

With Grimm Glue, Brothers Grimm showcases a more modern side of its lineup.

This combines the historic breeder's signature with glue-oriented US genetics.

Compared to Cinderella 99 or Rosetta Stone, Grimm Glue leans more toward gas, earth, pine, and intense resin production.

This allows the brand to bridge the gap between its classic 1990s lines and more modern American hybrid profiles.

Grimm Glue is now one of the important strains in the main catalog and shows that Brothers Grimm does not live exclusively on historic genetics.

Ocifer and the New Generation of Brothers Grimm Seeds

Ocifer is one of the newer strains that is highly visible in the current Brothers Grimm catalog.

Together with strains such as Grimm Mints, Grimm Truffles, Cinderella Pineapple, Cinderella Purple, and Genius Juice, as well as more modern tester lines, Ocifer shows that MrSoul is continuously developing the breeding program.

Old genetic building blocks often remain visible in the process.

Cinderella 99, Princess, Genius, and Rosetta Stone do not disappear from the program but are instead combined with newer lines.

This creates a modern generation of Brothers Grimm genetics that remains genetically connected to the brand's origins.

The End of 2002 and the Return of Brothers Grimm

The original phase of Brothers Grimm Seeds ended in 2002.

Due to the legal situation at the time and security concerns, the seed bank suspended its operations.

As a result, many original Brothers Grimm seeds became increasingly rare over the years.

However, the genetics never completely disappeared. Growers and other breeders received various lines and continued to work with them.

In 2015, MrSoul finally returned and reactivated Brothers Grimm Seeds in Colorado.

This marked the beginning of the brand's second phase.

Classic strains were reconstructed or offered again, while new feminized lines and modern crosses were also created.

Today, Brothers Grimm Seeds is once again an active American seed bank.

Regular and Feminized Brothers Grimm Seeds

The original Brothers Grimm strains were mostly developed as regular seeds.

However, the focus has changed significantly since the brand's revival.

MrSoul now focuses particularly on feminized photoperiodic cannabis seeds.

Cinderella 99, Apollo, G13 Genius, Grimm Glue, Killer Queen, Princess Haze, Rosetta Stone, and other major lines are accordingly available as feminized seeds.

At the same time, Brothers Grimm continues to carry selected regular genetics.

These include Cinderella 99, Killer Queen, Queen of Soul, and Rosetta Stone, as well as various Vintage Vault releases.

This keeps the brand appealing to both classic seed collectors and users of modern feminized lines.

The Brothers Grimm Seeds Vintage Vault

With the Vintage Vault, Brothers Grimm Seeds deliberately keeps older regular cannabis genetics in its lineup.

This section is particularly aimed at growers and breeders who want to obtain regular seeds and older genetic lines.

In addition to classic Brothers Grimm strains, limited F2 and preservation projects also appear there.

This sets Brothers Grimm apart from many modern seed banks that have now almost completely removed regular seeds from their lineups.

This section is particularly interesting for the brand's historic identity.

Modern Collaborations

Brothers Grimm Seeds is now also combining its legacy genetics with new collaborations.

For example, the current lineup includes an official Trailer Park Boys Collection with strains such as Ricky's Hash Plant, Bubble's Blueberry, and Black Tee Tangie.

In addition, the brand is working with Montel Williams on its own genetic collection.

These collaborations show that Brothers Grimm is now much more than a pure revival project.

The brand uses its historic genetics as a foundation while continuously developing new strains and collections.

Famous Brothers Grimm Seeds Strains

The brand's most important genetics include Cinderella 99, Apollo 11, Apollo 13, Apollo, Rosetta Stone, G13 Genius, Princess Haze, Killer Queen, Queen of Soul, Space Queen, Grimm Glue, Cinderella Pineapple, Durban Thai x C99, Ocifer, Grimm Mints, Grimm Truffles, Genius Juice, and Cinderella Purple.

Cinderella 99 and the genetic family that developed from it remain particularly influential.

Many of the other strains are directly or indirectly connected to one another through Princess, Genius, P75, or C99.

This is exactly what gives the Brothers Grimm catalog such an unusually clear genetic continuity.

Reputation in the Grow Community

Brothers Grimm Seeds holds a special status in the international cannabis community.

The brand is perceived less as a modern hype breeder and more as part of American breeding history.

In particular, Cinderella 99 still holds cult status today. The genetics have been used by countless breeders and appear in hundreds of documented offspring.

Apollo, Rosetta Stone, and Killer Queen have also been discussed in forums and genetic databases for decades.

At the same time, the current GrowDiaries presence shows that Brothers Grimm is not just a historic brand. New and old lines continue to be grown and documented regularly.

The realistic assessment is therefore: Brothers Grimm Seeds is a US legacy breeder that actively continues to develop its historic genetics.

The brand combines the old internet and underground breeding culture of the 1990s with a modern feminized seed program.

Typical Characteristics of Brothers Grimm Seeds

Brothers Grimm Seeds has a distinctly different genetic signature from many modern US breeders.

Instead of primarily building on Cookies, Gelato, or Runtz, a large part of the genetic foundation comes from Jack Herer, Haze, Shiva Skunk, G13/Hashplant, Princess, Genius, and Cinderella 99.

As a result, many strains are sativa-oriented or at least have distinct sativa and haze influences, while often remaining more compact and faster than classic tropical sativas.

Aromatically, the lineup ranges from pineapple, tropical fruit, and citrus to incense, jasmine, and spice, and finally to pine, earth, hash, gas, and glue.

Strong resin production, relatively compact plant structures, and clear genetic recognizability are also particularly typical.

Buy Brothers Grimm Seeds Cannabis Seeds at Cannaseuse

At Cannaseuse, Brothers Grimm Seeds represents one of the most important historic lines of American cannabis genetics.

The brand complements modern US breeders such as Compound Genetics, In House Genetics, Doja, and Cipher Genetics with a completely different genetic background.

Cinderella 99, Princess, Genius, Apollo, and Rosetta Stone come from a time long before Cookies, Gelato, Runtz, or Z genetics dominated the market.

That is precisely why Brothers Grimm is particularly interesting today.

Anyone looking for Brothers Grimm Seeds and wanting to discover classic US genetics with a Jack Herer, haze, C99, G13, or Apollo background will find a curated selection from one of the most influential American legacy breeders at Cannaseuse.