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.
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.
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.
Alchimia is pleased to present Critical Widow by Philosopher Seeds, one of the seeds most requested by our customers. After countless requests, the seedbank has included it in the catalogue. This variety is now available in our feminised cannabis see [...]
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 [...]
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 [...]
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 [...]
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 [...]
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 [...]
Alchimia is glad to present Black Runtz by Philosopher Seeds in a limited edition. A variety developed from a very exclusive phenotype of the famous Runtz. It offers a marked tropical fruit terpene that is truly exotic and genuine. Just carrying a sm [...]
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 [...]
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 [...]
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 [...]
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 [...]
Alchimia is pleased to present Critical Widow by Philosopher Seeds, one of the seeds most requested by our customers. After countless requests, the seedbank has included it in the catalogue. This variety is now available in our feminised cannabis see [...]
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 [...]
Alchimia is glad to present XXX by Ethos Genetic, a strain that develops foxtail flower colas the size of a grapefruit, with sweet berries, grape, pineapple and candied lemon flavoured terpenes, ideal for daytime use. A variety now available in our f [...]
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 [...]
Alchimia Grow Shop is glad to present Lemon Berry Candy OG R2 by Ethos Genetics, a feminised marijuana strain with a THC level of 25% and a huge resin trichomes production. Lemon Berry Candy OG R2, LBCOG #1 x LBCOG #7 hybrid It is a poly-hybrid Ind [...]
Ethos Genetics Mandarin Zkittlez is a cannabis hybrid cross between two genetic lines that offer an explosion of flavours, Mandarin Sunset and California Black Rose. The variety resulting from this amazing combination produces a tsunami of large wave [...]
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 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 [...]
Alchimia is glad to present Amnesia Haze Auto by Barney's Farm, the automatic version of the legendary Amnesia Haze. It is a very vigorous genetics, offering high yields with lemony citric terpenes and earthy undertones. It is now available in our au [...]
Auto Gorilla Blue from Advanced Seeds is an automatic feminised hybrid created from two high quality strains of great impact with European and Spanish growers. These varieties are Gorilla Glue #4 and the well-known Auto Blueberry, which provides the [...]
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 [...]
Sweet Skunk F1 Fast Version of the Seed Bank Sweet Seeds is one of the new fas F1 versions of one of the most grown cannabis plant of the whole world, the marijuana Skunk. This old school genetics is famous for be known as a powerful , productive an [...]
The Romulan marijuana strain has a unique flavour, and TGA knew that if he could get a cutting of the original clone from Vic High, he could create a new unique and very tasty strain.Subcool, fortunately, received this gene in clone form, with the au [...]
Alchimia presents Animal Cookies x Bubba Kush by Ripper Seeds in limited edition, a strain featured in feminised seeds. Animal Cookies x Bubba Kush, one of the most resinous genetics in Ripper Seeds catalogue Animal Cookies x Bubba Kush combines tw [...]
Alchimia is glad to present Gelato 41 x White Widow, feminised seeds in limited edition by Philosopher Seeds, a company born in the late 90's and launched in 2008 with the aim of sharing with other cannabis enthusiasts the preservation of this wonder [...]
Alchimia is happy to present Wedding Cake x OG Kush by Philosopher Seeds, feminised seeds in limited edition from this seedbank established in late 90's and launched in 2008 with the aim of sharing with other enthusiasts the genetic preservation of t [...]
Silent Seeds is proud to present here Critical + 2.0 original version, the improvement of the no less famous Critical, a highly appreciated variety with a fast flowering, abundant harvest and an unforgettable sweet and sour aroma. It is now available [...]
Alchimia presents Hindu Kush, a feminised variety by Nirvana Seeds, a renowned seedbank founded in 1995. Hindu Kush, a pure Indica, easy to cultivate, dense and big sized buds Hindu Kush is a purebred Indica genetics with a short and compact struct [...]
Alchimia is happy to present Somango XXL, an automatic and feminised cannabis seed strain developed by Nirvana Seeds, a veteran seed bank founded in 1995. Somango XXL, resistant, easy to cultivate with an abundant yield Somango XXL is a cross betwe [...]
Alchimia is happy to present Big Bud, a feminised variety by Nirvana Seeds, a veteran seedbank founded in 1995. Big Bud, (Afghani x Skunk) x Old School, a resistant, fast and productive strain Big Bud is a cross between (Afghani x Skunk) x Old Scho [...]
Now available in the Alchimia Grow Shop catalogue Northern Lights cannabis x Big Bud Early Harvest, created by World of Seeds to offer all the best characteristics of this hybrid, but with an even earlier harvest. A 100% Indica hybrid combining the [...]
Alchimia Grow Shop is pleased to present Auto Triping 25 by Mr Hide Seeds, a marijuana variety that reaches THC levels of up to 23%. Auto Triping 25, extremely easy to cultivate It has 70/30 Indica Sativa genes. The seed bank has not revealed its p [...]
