This breeder worked from around 1999 to 2004. The seeds byself are not available anymore, but some crossings and inbreeds of this famous strains you can find onto the actual seedbanks.

Brothers Grimm crossed two famous and fantastic clone-only strains to create this incredible strong mostly Indica. It is for sure a superstrain of highest order that was created by using the 1990s Neville’s G13/Hashplant from 'The Seed Bank'. The pollen came from Silver-Thiosulfate reversal of MrSoul’s hammerstrain great strain called Genius.Genius together with the outstanding Airborne G13/HP (which has a superb flavor profile of lemon/lime with a sour milk undertone) is a true winner: INCREDIBLE lemon/lime and sweet/sour flavors and aromas – you can not imagine how great this mostly Indica smells! The growth structure of the plants varies little bit but most are compact and bushy plants and they all share a citrus and sour flavor and aroma of highest order. G13 Genius has a great terpene profile and it is also very easy to grow, recommended for indoors and for greenhouse where you can expect big and fat plants.