serious seeds of Amsterdam produce plants with the highest THC

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Extract from our grow guide

Cannabis is an annual herb - that is to say it germinates, flowers, sets seed and dies in one year. Male and female flowering parts appear on separate plants (although it is possible to grow hermaphrodites).

Cannabis has two main varieties, cannabis sativa and cannabis indica.

Sativa is characterised by a tall growth habit, slender fingered leaves, lowish flower to leaf ratio and rather long flowering period.

Indica is characterised by a bushier growth pattern with wider fingered leaves, a higher flower to leaf ratio and a shorter, more predictable flowering period.

When smoked, sativa gives a clear, up, cerebral high while indica produces a 'stonier' more physical hit. In the last few decades, enthusiasts have created sativa/indica hybrids which combine the best features of both varieties.

The weather in the UK does not entirely suit the requirements of what is, essentially, a tropical plant. This guide attempts to show how a carefully controlled environment coupled with a suitable choice of plant variety can produce herb of the highest quality. In the author's opinion, herb grown organically tastes and smells better than hydroponically grown; therefore a compost-based method is fully described but fans of hydroponic methods will find that the principles outlined still hold good.

For more info on growing cannabis read our cannabis grow guide

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SERIOUS SEEDS is committed to quality and good service. All of our strains have won PRIZES at cannabis festivals, 18 awards in total!! We only carry 5 strains but these are amongst the very best to be found on the market today. Germination rates prove to be nearly 100%!!!

Serious Seeds is a small firm, concentrating on the production of high-quality, stable and consistent varieties of cannabis seeds. Top quality smoking cannabis for our customers is the highest priority.

Independent and reliable lab tests (over 20 years of experience in this field) have shown that the different Serious Seeds strains produce the strongest plants (highest in THC content) available on the market today, averaging between 18-22% THC. These tests were done on plants grown from the same seeds as the customer gets.

Due to increased difficulties and expenses for seed breeders in Holland serious now contain 10 cannabis (weed) seeds not 15 and the prices have remained the same.

Please remember that it is illegal to germinate cannabis seeds in most countries and that it is illegal to possess them in some countries. Please check local laws before ordering as the purchaser has to accept liability for his/her own actions. Before ordering  please read  terms and conditions

  Cannabis seeds are sold for collection purposes only and should never be germinated unless you live in a country where it is legal to do so. Any information on growing cannabis is provided for the benefit of people living in countries where it is legal to grow marijuana plants - for everyone else it is best left ignored.

 

 
AK47
This easy to grow plant is our most popular. It is of medium height and produces good yields quite quickly. Extremely STRONG odor and smoke. Take extra care with odor control when growing near neighbors. The name was given not out of any idea of violence, but more in association with the ‘one hit wonder’ that the smoke is. Quality without compromise makes AK suitable for commercial grows or home use. These plants have a short flowering period for a sativa, producing compact, not too leafy buds that gleam with a coat of resin crystals. 

£55 for 10 seeds
back in stock

Winning EIGHT prizes!! in Cannabis competitions, including second prize for the Best Sativa in the 1999 High Times Cannabis Cup, proves it is a favorite to smoke as well as to grow.


Type: mostly sativa
Indoor clone grow time: 5 - 10 days
Indoor flowering time: 53 - 63 days
Indoor yield: 350 - 500 grams/m2
Outside/ Greenhouse harvest time:
15-31 October

BubbleGum

Bubble Gum is a medium tall, usually not too branchy (sometimes stretchy) plant, producing compact, crystal covered buds. Originally the Bubble Gum was developed by growers in Indiana, USA. From there the genetics moved to New England and eventually Holland. lt took many generations to finally produce this stable Bubble Gum, with the characteristic, sweet smell (truly resembling a typical bubble gum taste) and euphoric high; the original trademarks of this famous strain. The only inbred strain (no F1 hybrid) on the Serious menu.

£50 for 10 seeds
Back in stock

Winner of two awards in the High Times Cannabis Cup of 1994, a 2nd place in 1995 and again a 2nd prize in 1999, gives Bubble Gum a total of 4 awards from the judges.


Type: sativa/indica hybrid
Indoor clone grow time: 7 - 14 days
Indoor flowering time: 56 - 63 days
Indoor yield:300 - 450 grams/m2
Outside/ Greenhouse harvest time;
15-31 October
Price: €70,-

 


Chronic

Our most commercial variety, this medium height, not too dense plant is the perfect combination of good yield and excellent quality. Smokers that know and grow choose this plant for its combination of appearance and sweet smell. With its indica background Chronic can produce up to 600 g/m2 without losing that connoisseur feeling. Grows a single huge central bud with few side branches. Do not top plants to encourage multiple big buds, as this strain does not respond well. Mild, sweet smell develops while flowering, take care to dry thoroughly after harvest (before packaging) to maintain this subtle fragrance. 3rd prize High Times Cannabis Cup 1994, improved in 2000.

£50 for 10 seeds
back in stock

Of all our strains, this is the best choice for growers tired of losing quality when increasing yield.


Type: sativa/indica hybrid
Indoor clone grow time: 5 - 10 days
Indoor flowering time: 56 - 63 days
Indoor yield: 350 - 600 grams/m2
Outside/Greenhouse harvest time:
15-31 October
Price: €70,-

 


Kali Mist

Arguably the top sativa strain available today. With 90% sativa genetices, Kali Mist grows into tall, classically sativa plants with very few leaves. This strain produces dense clusters of full fluffy buds, producing much higher yields than you would expect. The plant structure and few leaves allow the light to pass all the way to lower branches, allowing bottom buds to develop fully. When planted outside early in the year this plant can grow very tall. Expect spiraling flowers with a high resin content and a delightfully spicy scent.

Kali Mist is often the choice of experts for their own stash grows.

£55 for 10 seeds
back in stock

Also, women particularly seem to like this strain, next to the sheer pleasure of smoking it, we received several reports that it works great against menstrual cramps.

We are proud to announce that Kali Mist was improved in 2000 to produce bigger yields. In Spain it proved to be very mold resistent, even outside during bad weather. This strain has flavor and subtle cerebral effect that gave it a Cannabis Cup first prize in 1995 (Hydro Cup) and again (with this new and improved version) in 2000 (Seed Company Sativa Cup)! Without a doubt the choice for connoisseur stash.
Gives a very strong, clear and energizing high.

White Russian

These seeds produce plants that are fantastic in both appearance and effect. Our most typically indica strain, White Russian is a stable cross of AK-47 and White Widow (a prize winning indica clone). Medium height, consistent plants and dense, very resinous flower tops (crystals appear after about 5 weeks of flowering). With such a strong indica background, the plants smell quite strong during both their growth and flowering period. In an independent seed comparison in which over 150 different seedstrains were grown out in a greenhouse, the White Russian came out as the strongest plant (22% THC, likely to be the strongest plant known at present!!).

£50 for 10 seeds
back in stock

Winner of the overall Cannabis Cup in 1996 and of the Cup for Best Bio Grass in 1997. The plants yield very powerful buds, coated with resin.
Very strong, long lasting high, more cerebral than knockout. Medicinal plant.


Type: mostly indica
Indoor clone grow time: 5 - 10 days
Indoor flowering time: 56 - 63 days
Indoor yield: 350 - 500 grams/m2
Outside/ Greenhouse harvest time;
15-31 October
Price: €70,-

 

           
           
       
   

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