Blue Magnum

A team of connoisseur breeders of cannabis were working on a number of new strains around the hills and mountains of California and Oregon that would ultimately lay the basis for the varieties of marijuana available today. A legendary breeder was also included in the team who crossed several Thai hybrids.

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Working to establish what would later become the "gold standard" of North American strains of cannabis, a group of marijuana growers settled in the picturesque area of Oregon and California highlands. Among the crew was a famous breeder that crossed various cannabis varieties available as early as in the 80s. They went through a number of attempts, including the selection of hundreds, if not thousands of seeds. Their hard and enduring work resulted in the creation of Blueberry - one of the most popular strains that smokers enjoy nowadays.

Drawing from this inexhaustible source of prime genetics, we have been able to develop a feminized seed and bring it to directly you from the California-Oregon region as the Blue Magnum. A feminised cross between Northern Light, Blueberry and Afghanistan Indica, Blue Magnum is mostly Indica, that produces a bonsai-like plants. With its short stacks and hardly any stretching, it could grow to 110-150 cm, though cutting the top is strongly recommended, as it will result in a more bushy shape.

Letting it grow horizontally can increase the yield, as the plant is not going to be sky-high. In order to maximise the crop, it is also advised to extend the vegetative period by one week. Grown indoors, it will average around 35-45 g per plant, though it could easily yield as much as 50 g. Per square meter, using 600 W lighting that would bring approximately 300-500 g.

After 8 weeks of flowering, Blue Magnum is ready for harvest, which will be announced by the sweet, fruity aroma. Given extra few days (totaling 9 weeks), though some of the taste might be gone, it will produce a mightier, stony high. While drying the plant before processing is always recommended, it is especially important in the case of Blue Magnum, in order to preserve its full flavour.

While smoking their crops, successful Blue Magnum growers might actually feel the invigorating taste and sweetness of real fruit juice. Extremely high levels of both THC and CBD result in a strong physically stoned effect that matches its strong flavour.

Blue Magnum cannabis seeds

  • Flowering time 9 weeks
  • CBD Extremely high
  • Genetics Northern Light x Blueberry x Afghanistan Indica
  • THC Extremely High
  • Effect Stoned
  • Height 110-150 cm
  • Yield Medium

    By Guillaume P. :

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    By Wybe C. on 22/Oct/2013 :

    Title : Ge-wel-dig!
    Comment : Dit is echt de "Gold Standard" onder de cannabis planten. Wij zijn dol op in de VS ontwikkelde soorten. Nadat onze laatste leverancier ons teleurstelde, hebben we jullie gevonden. Wij durven best te zeggen dat jullie onze hofleverancier worden. Na onze geweldige ervaring met jullie bestel-, verzend- en klantenservice, zullen we zeker terugkomen. Het is eenvoudig bestellen via jullie site en de levering is snel. Dank jullie wel voor het aanbieden van deze geweldige cannabis variëteiten.

    By David A. on 08/Oct/2013 :

    Title : Blue Magnum
    Comment : This strain is a little less sturdy that its relatives. It requires a fair amount of sunlight and does best when grown indoors. The Blue Magnum gets its name from the blue-ish hues that show up on the buds mid-way through the flowering process. Blue Magnum seeds grow in a similar fashion to Northern Lights, yielding 35-45 grams per plant. This is not the best option for beginners, as it is not as hearty as other strains, but the buds produce a high amount of THC making it an excellent source during harvest.

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Used genetics in our crossings

In our Zambeza crossings we use a lot of different cannabis genetics, including the famous White Widow, Northern Lights, Jack Herer, Amnesia, Blueberry, Big Bud and more. Find out what these genetics stand for and their extensive background. More info about all the cannabis genetics we have used.

Genetics - Blue Magnum

To create Blue Magnum we have used the following genetics:


Northern Lights is a strain created in the eighties and has been a classic ever since. Definitely an all-time favorite. More info


Blueberry is an old-school strain from back in the late 1970's and is the parent strain of all things Blue. More info


Afghani is a pure indica coming from the high mountains of the Mazar i Sharif regio in Afghanistan. More info


All cannabis seeds sold at Zambeza Seeds are solely for personal use. We do not supply seeds to large scale or commercial growers. We reserve the right to refuse sale if we suspect this term is being breached.