Cannabis cultivation involves several stages. Seed germination is followed by the growth and flowering of the plants, which are harvested later on, when they're ripe.
The bloom phase is the most important stage of your crop. It ends when we finally harvest our plants.
When does the flowering period start?
The bloom period begins with the appearance of the first flowers, about 10-15 days after switching the photoperiod to 12 hours of continuous light followed by 12 hours of complete darkness. Autoflowering strains do not depend on photoperiod to develop flowers, for they automatically start flowering 2 or 3 weeks after seed germination.
How long does the flowering stage take?
Cannabis plants need more or less days to ripe depending on the grown strain. Some varieties bloom very fast - taking less than 2 months to ripe - while others may extend their bloom for more than 3 months.
Indoors, a quick flowering allows us to perform several harvests per year. Outdoors, faster strains avoid the risk of rains and molds in October and November.
Here we list the fastest flowering strains on our catalog, with a theoretical bloom period of 8 weeks.
There are 447 products tagged as Fast flowering genetics
Alchimia is happy to present Triton Biscotto Lime by Seed Stockers, the encounter between two very interesting strains such as Oreoz Mintz by 3rd Coast Genetics and Lemon Tree. The result is an easy to grow Sativa plant. It offers a complex flavour w [...]
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3 seeds
23.98€ 20.35€
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5 seeds (Out of stock)
35.97€ 30.55€
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25 seeds
143.88€ 122.25€
Alchimia is pleased to present Grape Nana by Cannarado Genetics, a new variety from this seedbank coming directly from Colorado. These seeds are offered exclusively in regular format.
Grape Nana is part of a new seeds line based on its well-known Gr [...]
Alchimia is delighted to present Mimosa x White Widow, feminised seeds in limited edition by Philosopher Seeds. This company was born in the late 90's and launched to the market in 2008 with the aim of sharing with other cannabis lovers the genetic p [...]
Alchimia is delighted to present Epsilon F1 Auto by Royal Queen Seeds, possibly the fastest strain from this seedbank. A strain with a high THC and terpenes level, that offers a strong citric aroma and forest berries flavours with earthy and lavender [...]
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1 seed26.00€
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3 seeds 62.00€
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5 seeds (Out of stock)94.00€
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10 seeds 170.00€
Alchimia presents White Gorilla by BSF Seeds, a marijuana plant developed from two legendary genetics: Gorilla Glue #4, known for its exceptional power and flavour, and White Widow, praised for its excellent resin production. This strain is easy to c [...]
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2 Seeds
20.00€ 16.00€
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4 Seeds
34.00€ 27.20€
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7 Seeds
54.00€ 43.20€
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12 Seeds
78.00€ 62.40€
Alchimia is delighted to present Critical Mass by Advanced Seeds, an early and easy to cultivate strain with a high production. It offers very sweet terpenes and powerful and balanced effects. It is now available in our feminised cannabis seeds catal [...]
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1 seed
8.00€ 7.20€
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3+1 seeds
17.50€ 15.75€
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10+3 seeds
55.00€ 49.50€
This marijuana strain developed by the team of Barney's Farm is a strange mix that comes from two famous genetics: the Critical Kush is a crossing between the highly desired Critical Mass and OG Kush strains.
The result is a very powerful Indica pla [...]
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1 Seed
11.00€ 8.25€
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3 seeds
30.00€ 22.50€
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5 seeds
46.00€ 34.50€
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10 seeds
87.00€ 65.25€
Alchimia is glad to present Strawberry Cola Sherbet F1 by Sweet Seeds, a very fast flowering, and fragrant Fast Version strain, with a great production of red buds. It offers a fresh citric aroma of red fruits and cola. It is now available in our fem [...]
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3 seeds
30.00€ 21.00€
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5 seeds
50.00€ 35.00€
Alchimia Grow Shop is happy to present Zkittlez by Advanced Seeds, a hybrid marijuana plant crosse between Grape Ape x Grapefruit. The result is a variety highly acclaimed by cannabis gourmets, well-known for its high quality flavour with incredible [...]
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1 Seed
8.00€ 7.20€
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3 + 1 Seeds
16.50€ 14.85€
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10 + 3 Seeds
49.00€ 44.10€
We present Tropicanna Poison F1 Fast Version by Sweet Seeds, a super-fast variety of reddish colours. It is already available in our feminised cannabis seeds catalogue at Alchimia Grow Shop.
It's a hybrid between Tropicanna Cookies (Girl Scout Cooki [...]
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3 seeds + 1 free seed
25.50€ 17.85€
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5 seeds + 2 free seed
42.50€ 29.75€
Alchimia is glad to present Watermelon OG by Advanced Seeds, a high potency and great performance strain with refreshing watermelon aromas. A strain now available in our feminised cannabis seeds catalogue.
Watermelon OG, cannabis with a sweet waterm [...]
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1 seed
8.00€ 7.20€
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3+1 seeds
21.00€ 18.90€
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10+3 seeds
65.00€ 58.50€
Alchimiaweb.com presents Gorilla Girl F1 Fast Version by Sweet Seeds, a feminised cannabis variety inheriting US genetics and with a THC level of up to 31%. It's the most powerful strain in this seed bank.
Gorilla Girl F1 Fast Version, a powerful Go [...]
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3 seeds + 1 free seed
29.50€ 20.65€
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5 seeds + 2 free seed
49.00€ 34.30€
The cannabis strain Triple Cheese from Barney's Farm comes from a series of crosses, selections and backcrosses of the Original Cheese, enriched with the Blue Cheese marijuana . The result is a Cheese line with high yields and fast flowering. Now ava [...]
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1 Seed
10.00€ 7.50€
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3 seeds
27.00€ 20.25€
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5 seeds
42.00€ 31.50€
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10 seeds
80.00€ 60.00€
Alchimia is happy to present Cherry Pie by Advanced Seeds, an Indica dominant strain with purple hues, cherry aromas and acid tones with a relaxing effect. A strain now available in our feminised cannabis seeds catalogue.
Cherry Pie, Cannabis with fr [...]
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1 seed
8.00€ 7.20€
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3+1 seeds
19.00€ 17.10€
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10+3 seeds
59.00€ 53.10€
ACE Seeds presents Moroccan Beldia Kif, an authentic pure Moroccan strain sourced from the Rif region, in the north of the country near Ketama and Chefchaouen. This variety is traditionally used to produce the world-famous Moroccan blonde hash and is [...]
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3 seeds31.00€
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5 seeds50.00€
Now available in our catalogue at Alchimia Grow Shop, Quick Gorilla by Dinafem, the fast flowering version of Cannabis Gorilla Glue, with a flowering stage of about 51-56 days, that is 10 days less than the original GG.
It is a cross between Gorilla [...]
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1 seed (Out of stock)12.00€
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3 seeds (Out of stock)28.00€
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5 seeds (Out of stock)45.00€
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10 seeds (Out of stock)90.00€