Seedsman aims to make growing the best cannabis easier, but we can help make it faster, too. Whether you’re late planting your seeds, looking for multiple harvests, or just downright impatient, the easiest way to speed up the whole process is in your choice of cannabis seeds - in other words, by selecting a fast-growing cannabis strain from the outset.
It doesn’t matter if you grow indoors or outdoors, either – if you need results in a hurry, these speedy strains will do the job.
Most of the plants below are hybrids of vigorous photoperiod strain cannabis plants paired with the insanely-quick flowering times of autoflowering strains. Flowering times are somewhat approximate but largely accurate.
Seedsman has a series of fast-growing strains, genetically bred for their turnaround. We'll have a look at a few of these before examining some classic speedy strains
White Widow FAST
Seedsman’s own White Widow FAST seeds combine the photoperiod genes of the legendary White Widow Strain with Fast genetics. The result is a sturdy plant with a flowering time of between just six and seven weeks, meaning all the most sought-after qualities of the classic 1990s strain can be yours a week sooner than they would with the regular photoperiod version.
White Widow FAST is a fairly short indica/sativa hybrid, growing to no more than 120cm. This, coupled with its lightning-quick flowering period make it an ideal strain for growers looking to produce with some degree of stealth. She’ll deliver respectable yields, too – look forward to 350-450 gr/m2 of frosty-looking buds, packing a THC content around the 20% mark. This translates to a powerful effect that begins in the head before moving south to relax the body.
White Widow FAST is just as productive and easy to grow indoors, outdoors, or in greenhouses.
Jack Herer FAST
Another classic strain available with a quick finish, Jack Herer FAST somehow manages to improve on the original by shaving up to a fortnight off the flowering time. That’s right – award-winning cannabis can be yours in just seven weeks! Like White Widow FAST, Jack Herer FAST’s growth will peak at no more than 120cm, yielding around 400 gr/m2 of high-THC buds that positively drip with sugary trichomes.
This is a strain well-suited to indoor growing, but outdoor cultivation will produce equally great results, and plants are ready to harvest before the wetter weather comes in around September.
Jack Herer FAST retains all the desirable qualities of the famed original – expect the unmistakable sweet and peppery Jack taste along with those familiar herbal and pine aromas. It’s a slightly sativa-leaning hybrid with a high-THC content, meaning Jack Herer FAST wraps you in a blissful, euphoric and creative blanket.
C99 x Blueberry FAST
Fans of Cinderella 99 and Blueberry will love the hybrid offspring of these favourites, and the fast-flowering version means you won’t have to wait any more than 7 weeks to get your hands on this fruity beauty.
C99 x Blueberry FAST grows quick, but it also takes a stretch, so be sure to allow adequate room to accommodate the significant growth this indica/sativa hybrid needs when she starts to flower. Equally happy growing indoors or outdoors, this strain produces as much as 450 gr/m2 of high-quality bud, generously coated in trichomes. Cultivators will love to hear that C99 x Blueberry FAST has relatively few larger leaves, and as such, trimming is easy.
If you like to indulge your palate with fruity flavours, this strain will delight with its combination of blueberry and citrus tastes. Expect more than a hint of South East Asia from its Thai Sativa genetics, and a high THC content of around 20% is yours after just 45 days. C99 x Blueberry FAST will vanish stress and melt your cares away with its dreamy cerebral effects, and in no time at all, you’ll be floating on a wave of euphoria.
Amnesia FAST
For fans of harder-hitting hybrids, Seedsman’s Amnesia FAST has all the qualities you’re looking for in a quick-growing strain. High THC and high yields make for high times with this impressive plant. Ready after 50-55 days of flowering, Amnesia FAST should be on anyone’s shopping list.
Amnesia FAST combines the genetics original Amnesia strain with a top-secret hybrid, and the results are impressive. It’s a medium-sized plant, coming in at 100-150cm, but that plant produces extremely respectable yields of 550-600 gr/m2 when grown indoors. Buds are dense, and generously packed with an eye-popping 25% THC! She’s just as happy growing outdoors, but leave plenty of space when planting to accommodate the additional growth.
Aroma and taste share some similarities with the original Amnesia strain, but with added fruity and floral notes over and above the spicy haze of its ancestor. The strong cerebral, creative effect from the mostly-sativa genetics, coupled with the outstanding THC content means Amnesia FAST is one you definitely won’t forget!
Black Sugar
For a fast-flowering strain with high yields, high THC and medicinal properties, look no further than Seedsman’s own Black Sugar. In just 8 weeks, this truly unique strain offers up some of the finest traits its parentage has to offer. From Black Domina, we’ve retained the great yield and flowering rate, while keeping the medical properties from L.A. OG and the compact size of the Critical Strain.
Black Sugar is a powerful mostly-indica strain, with a shorter structure that makes it idea for those looking to grow plants quickly with limited space. The yields are among the most impressive around, with 600 gr/m2 common among indoor growers and a superb 800 gr/plant achievable if cultivating outdoors. Buds are generous, and have a sugar-dipped appearance to them.
This is a very high-THC strain that offers upwards of 20%, resulting in a powerful, sedative body effect when coupled with the indica properties. For this reason, Black Sugar is an excellent choice as an evening strain to chase away insomnia. A winner with fans of fruity flavours, Black Sugar boasts a taste profile packed full of fruity lemon and orange with a hint of Skunk.
Purple Punch F1 FAST
Superior genetics in a hurry? Absolute, with Seedsman Purple Punch F1 Fast. This is a high-THC strain created by breeding Purple Punch with (GMO Cookies x Legend OG) The result is a 75% indica strain that can blow your hair back thanks to its THC content, which tops out at around 27%.
This speedy grower can be ready in as little as 7 weeks and offers up sizeable yields of between 400-600 gm/m2 when cultivated indoors, whereas outdoor growers can look forward to more sizeable plants, and yields between 450-750 gm/plant.
Along with the generous THC levels, expect a mind-bending taste profile that is both flora and fruity, yet backed with some Skunky, gassy notes, before being swept away by the potent relaxing effect.
Gorilla Gas F1 FAST
Seedsman's F1 FAST range is packed with quality in every metric - whether it's flowering times, terpene profiles or reliable genetics, there's something every grower will love. Gorilla Gas F1 FAST brings the heat with a lab-certified 23% THC content and a flowering time of as little as 7 weeks in the right conditions. But that's not the only reason growers are voting for Gorilla Gas F1 FAST. THe high degree of mold resistance means a lower chance of one of every grower's worst nightmares coming to life as it bats off such pathogens without breaking a sweat. You'll fall in love with the big chunky buds, absolutely covered with resin, making this a top pick for anyone who loves to make extracts.
Among the many tricks up its sleeve, Gorilla Gas F1 FAST boasts an unusual but luxurious taste profile, akin to spicy chocolate, but backed up with heavy Diesel notes and hintos of Skunk and pine. If you're growing indoors, make sure your odor control game is top notch!
Speedy Chile FAST Version
A rapid-flowering, indica-dominant hybrid, Royal Queen Seeds’ Speedy Chile FAST Version combines Green Poison and Chile Indica to stellar effect. This is an easy-growing strain that requires no specific special attention, and the result is an impressive and above-average yield just 8 weeks after germination - that’s two weeks of vegetative, then six weeks of flowering time!
Whether you grow Speedy Chile Fast indoors, outdoors, or under the cover of a greenhouse, you can rest assured you’ll see handsome rewards in a timescale you never would imagine. Yields as high as 500 gr/plant are possible for outdoor cultivators, and indoor growers can look forward to almost the same! It should be noted that Speedy Chile Fast is best grown indoors unless you live in a warmer, Meditteranean-type environment.
Expect a respectable potency from Speedy Chile Fast – THC content is a handsome 16% with very little CBD, resulting in a mellow but uplifting head effect, with some medicinal benefits for insomnia, pain and lack of appetite.
Fast Bud #2 Auto
If you prefer the reliability or smaller stature of an autoflowering strain, Fast Bud #2 Auto will race from seed to harvest in under 8 weeks. This superb strain shares a lot of qualities with the infamous Diesel, including color and flavor. THC content is medium, around 10-15% making it an ideal choice if you're looking for effects but not heavy impairment.
You get plenty of bang for your buck with Fast Bud #2 Auto, as it's a highly vigorous grower and puts up big ield numbers if cultivated indoors - 450-600gm/m2 is not to be sneezed at! Outdoor, yields are modest, but the Ruderalis genetics means it can cope with most types of climate - cool, dry, warm, wet - Fast Bud#2 Auto keeps on doing its thing regardless.
Sweet Critical FAST
If you're going to talk about fast growing strains, you'd better not forget 00 Seeds' Sweet Critical Fast. This beauty leaves all others in its wake thanks to almost unfathomable flowering time which has been recorded at 40-45 days! Don't blink, because you might miss whatever magic happens to produce quality cannabis in such a short time.
Sweet Critical means business and offers quality to go with the speed, as evidence by a look over its rap sheet. High THC content? Check. Dense buds? Check. Up to 750gm/plant when grown outdoors? In 45 days? Check. As an indica-dominant hybrid variety, Sweet Critical Fast offers superb relaxative effects, and a sweet fruity taste that dances on the palate.
