Positronics seedbank's story starts in 1985 when the first European grow shop was opened by Wernand Bruining. Its name was Positronics and after having gained years of experience crossbreeding and developing new cannabis strains, Positronics cannabis seeds found themselves to be amongst the most experienced cannabis breeders in the world. In 1996 Positronics shut down and the seed bank was divided between its workers. All of the original strains moved to Spain with Werner and he has carried on using his experience to create many more wonderful marijuana strains and hybrids. Positronics Seeds have produced such popular strains as Blue Rhino, Caramelice and Purple Haze. Cum Laude is a pure Sativa Haze which is created as a tribute to Mr. Antonio Escohotado, who is considered one of the pioneers who initiated the fight for the rights of marijuana users. Cum Laude is a product of hybridisation of three different pure sativas which are Queen Mother, Tijuana and original Haze. Cum Laude, also called as the jewel in the crown, is created to maintain a stable supply of pure and potent sativa strains in marijuana market. Positronics set out with the mission of ensuring that home growing supplies were available to everyone.
Positronics Seeds Purple Haze #1 was produced from Mexican, South Indian and Thai variety.
Until the 70's, this plant has an incredible resin development and produced a clear and energetic high.
This typically outdoor Sativa is a very, very dark purple, almost black, with medium green leaves, brownish-red hairs, and lightly coated with crystals
Cum Laude was born as an acknowledgement to Mr. Antonio Escohotado, for his priceless work normalising the cannabis scene. Teacher, philosopher, writer... he's one of the big thinkers of the XX century, and is considered one of the pioneers in the fight for the cannabis users' rights. Positronics Seeds Cum Laude Positronics Seeds Cum Laude is a triple hibridisation of pure sativas. Some elite clones were given to us with the intention of working to creat a stable line of pure sativa. (Queen mother X Tijuana) X Original Haze Cum Laude will grow very fast from the very beginning with a typical fir pattern.
Positronics Seeds Afghan Express has origins rooted in the middle east give this plant big size and strength, amazing for an autoflowering.Taste of afghan hash, if you want a fast crop ride this magic carpet for an arabian nights experience.
Light endogamic cross between two exceptional indica varieties. The Misty gene was revolutionary in the 80s. The origin of this variety remains a closely guarded secret but, given its high CBD levels, Positronics decided to preserve it by importing it directly from the USA. During the mid nineties, White Widow was launched and quickly became one of the most prestigious varieties on the market. Positronics decided to combine the two varieties and recommend its use for medicinal purposes due to its high level of CBD concentration.
Positronics Seeds Caramel Ice concentrates the flavour and the aroma of his parents, while presenting greater resistance to mould and a notable early flowering. From the fifth week the typical intense orange colour and calyx are covered with a large number of trichome, forming "towers of gems" so large and compact, which are called "donkey dick".
It picks you up in a medieval cathedral. Claustrum is our rarest creature of sativa's. It's a three band-cross among heterozygous families: Kali Mist, Super Silver Haze and Jack Herer. The first cross was done between Super Silver Haze and Kali Mist. The plant selected expressed at 50% its parents. This super-sativa hybrid was crossed with one of the best varieties of the history: Jack Herer. The result, CLAUSTRUM, is the fusion of the best sativas' of the world.
Great hybridisation between two of sweetest varieties on the market: Critical Mass and AK47. Resulting in the perfect development of skunk, by crossing them we were able to increase more of the old taste of skunk.
Our automatic version of the winner critical mass has all the caracteristics that made it famous: smell, flavour, big crop... AT LEAST! autoflowerings of great size and effect.
Our most award winning strain in cups is CRITICAL#47. After a long way of hard work and many testings, we crossed the mother used in it with our Low ryder II to get a stable automatic strain. As a result, a big automatic plant with great aroma and a taste not easy to find amongst the automatic strains nowadays.
Positronics Seeds Jack Diesel comes from two pillars of the Cannabis world that crossed together and produced a variety that reaches and exceeds the origins. The strength of one of the most popular hybrid in the world, Jack Herer, added to the power of the legendary NY City Diesel. A strong and vigorous plant, with a growing pattern typically Indica that becomes Sativa at the time of flowering.
May Day is the result of Positronics crossing the Misty with females receiving Low Ryder # 2. The offspring were classified and organised in batches depending on the recipient female used. This very compact plant is reminiscent of a small fir Christmas tree.
This plant is going to be called a classic, though maybe it already is. Massively tested thanks to YERBA magazine, we are now launching the commercial version because of people's pressure. It is called in the forums as "THE BEAST, now you can find out why.
The express version of our award-winning SUPERCHEESE surprise you. The force from the start showing results in an automatic and large resinous flowers. Maintains cheese flavour structure and an automatic luxury
Comercial strain of a big name. Will take you to the skunk ancestors, with a strong and penetrating smell like old cheese. Easy cultivation.
Will take you back to the old school flavours, this old skunk will amaze everybody. To keep the cheese touch and remain those old flavours, we hibridated this plant with another homonimous clon of a different origin, achieving great stability.
SeedMadness Unit 1, Dolly Lane Business Centre Leeds LS9 7AS United Kingdom
Monday - Friday
10am - 5pm
10am - 2pm
Welcome to our store
SeedMadness is the place for the freshest and finest cannabis seeds. With over 2500 strains from the top cannabis seedbanks and specialised premises OPEN TO THE GENERAL PUBLIC, you know you can trust SeedMadness for your weed seeds.
All descriptions and images originate from the breeders who operate in a different legal framework to the U.K.
As such, you should never cultivate any cannabis seeds within any jurisdiction where such cultivation is deemed illegal.
Our seeds are sold purely for souvenir purposes and should be treated as a curio or novelty item only.