Long-established as one of the most respected names in cannabis seed breeding, Positronic Seeds is a Spanish based seed bank that specializes in the development of cannabis hybrid strains. 

Positronics founder, the geneticist Wernard Bruning, began growing his first cannabis crops in Canada around the 1980s, researching and developing genetics that would, following years of research and analysis, lead to the creation of the Positronics Seeds co in Amsterdam in 1985.

Following a move to Spain in 1996, Positronics established themselves as industry pace-setters with their impressively diverse variety of feminized and feminized autoflowering cannabis strains.

Using classic genetics including strain legends like Skunk #1, Northern Lights and White Widow, the Positronics seeds company has emerged as pioneers in the development and delivery of some of the world´s first marijuana hybrid strains, earning themselves a reputation as one of the most influential breeders in the industry.

Some of the most famous Positronics hybridised feminised seeds to emerge from the work of the Positronics strain hunters include Jack Diesel, Blue Rhino, Cum Laude and the high in THC strain legend, Purple Haze.

Specializing in high in CBD strains, the Positronics seeds co offer a wide range of medical seeds for those looking to grow their own medical marijuana with CBD Caramel Ice and Black Widow some of the most popular medicinal strains on the market today.

Here at Marijuana Grow Shop seeds bank, we are thrilled to offer a selection of Positronics hybridised marijuana seeds including the potent cup winner Caramel Ice, as well as modern-day classics including the indica-dominant Afghan Express and Lemon Trip.

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    Grapefruit

    Feminized | Medicinal

    If you’ve ever eaten Grapefruit, it could be argued that this often bitter fruit is an acquired taste. However, with a sweet citrusy flavour, this easy to grow hybrid strain from Positronics Seeds is touted as a treat for those with a sweet tooth, promising to deliver a calm, creative, cerebral high with a notable absence of lethargy.

    Feminized
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    Caramelice

    Feminized | Medicinal

    A cup winner several times over, the secret to this strain’s success lies in both its taste and aroma. Not the most potent cannabis seeds, caramel ice, slowly guides you into a calm, cerebral high with a deliciously sweet yet smooth flavour.

    Feminized
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    Super Cheese

    | Medicinal

    Super Cheese is a nostalgic, indica-dominant hybrid cannabis seed from Positronics Seeds that brings back vibes of the famed Dutch coffee shops of the 80s. Combining the past with the present and that famous pungent aroma cheese strains are famous for, Super Cheese is a modern reincarnation of an old-school classic. 

    Feminized
    Autoflower
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    Critical #47

    | Medicinal

    Brought to you by the Positronics Seeds bank, Critical #47 cannabis seeds are guaranteed to produce delicious, fragrant, and quick-flowering plants with fruity flavours reminiscent of mango and peach. This indica-dominant high in THC strain offers a potent but pleasant cerebral high thanks to the balance provided by its legendary parents.

    Feminized
    Autoflower
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    One Love Haze

    Feminized | Medicinal

    Positronics Seeds selected cannabis seeds from many Haze varieties to create this ultimate daydream: One Love Haze. Quick to grow indoor cannabis with thick buds, these feminised cannabis seeds will please both experienced and novice growers alike. Fragrantly familiar and exotic at the same time, One Love Haze will satisfy both old school experts and the canna-curious newcomers.

    Feminized
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    GMK

    Feminized | Medicinal

    Positronic Seeds created this potent indica hybrid for the Kush cannaseurs. If you love the full-body effect and vintage flavour of Kush strains, put Gordo MasterKush at the top of your tasting list. Easy to grow feminised seeds with short flowering time, Gordo Master Kush aka GMK is an indica-dominant and high THC strain that will lift your and leave your body at ease.

    Feminized
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    Lemon Trip

    | Medicinal

    Take a trip down the lemon lane, with these highly exotic seeds brought to us by the experts at Positronic Seeds. Lemon Trip is a sativa-dominant delight with a highly uplifting effect and refreshing citrus flavour.

    Feminized
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    Chizpa

    Feminized | Medicinal

    When translated to English, Chizpa means “spark”, and with this seed, it is clear that Positronics Seeds created this potent marijuana strain to bring the spark back to your day. A sativa dominant hybrid plant that grows quickly, Chizpa feminised seeds will delight veteran and novice growers alike with its unmistakable sour aroma and high-yielding buds.

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Don’t worry, we handle your order discretely

To ensure this, we use plain 20x27 white bubble wrap envelopes without any visible labelling except for your adres and our return address.
Our company name will read as “Guru Trading BV”. No other company labels, receipts or any references to cannabis are included on the envelope.

Want to know more about our shipping?

Want to know more about our shipping?

At Guru we make sure your order is handled discreetly and with the utmost care and privacy.
Still not sure? Watch our video about our shipping procedure.

What our users say

This website was recommended to me, it was exactly what I was looking for. So much useful information, I could literally read for hours. This is now where I get my CBD oil and my purple punch seeds are growing nicely. They also have really unique and useful packaging for the seeds. Cool company!
siun mcfaden
siun mcfaden
19:01 19 Jun 19
Personalized customer service and updates to the status of the order. I would very much recommend Coffeeshop Guru. In addition, they carry specialized seeds for less that other shops. I am a very happy client.
April Fregd
April Fregd
11:30 06 Jul 19
Informative website. Products are delivered with care. I am very satisfied with my new Amnesia Haze seeds. Let them grow, Guru go go go!
Pieter Van Vliet
Pieter Van Vliet
14:50 24 Jun 19
I'm impressed with the website and the variety of products they stock. My order arrived in a very unique, stylish package that really made a good first impression about the quality of this company.
Jeroen Stapper
Jeroen Stapper
17:21 21 Jun 19
I like the fact they care about cannabis. I can see that in their packaging and the info they provide on the site. Good shop, will order from them again.
Robert Nijhout
Robert Nijhout
18:48 05 Jul 19

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