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Top 10 fastest growing cannabis strains of 2025
When it comes to growing the fastest-flowering strains, autoflowers usually steal the spotlight. Thanks to their built-in timer, they simply race from seed to harvest without any need to adjust the light cycle. If you’re curious to see just how quick they can be, check out the top 10 fastest autoflowers for some impressive genetics that finish in record time.
But don't count out photoperiod varieties just yet. The newest generation of fast-flowering strains proves that you can enjoy the best of both worlds: fast-growing weed with high-yielding, fast-finish genetics that still let you take control of the vegetative stage. Whether you're chasing multiple harvests per year or simply want to shorten your turnaround without sacrificing yield or potency, these weed seeds are designed to deliver.
In this guide, we've hand-picked the top 10 fastest-flowering photoperiod cannabis strains of 2025, backed by breeder data and grower feedback. These cultivars set the new gold standard for speed, reliability, and performance.
Top 10 fastest photoperiod cannabis strains
The following strains all stand out for their exceptionally short bloom times, with each one combining fast-growing weed genetics with solid yields, rich aromas, and reliable performance for both indoor and outdoor grow ops.
Whether you're growing in a cooler climate or aiming for multiple harvests a year, these high-yielding, fast-finish strains offer the perfect balance of speed and quality.
Green Poison F1 Fast Version: Sweet Seeds
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Flowering in just 6–7 weeks, Green Poison F1 Fast Version by Sweet Seeds is one of the fastest-flowering strains ever developed. This 70% indica, 30% sativa hybrid was bred directly from the original Green Poison, offering substantial yields. Indoor growers report harvests of up to 600 g/m², while outdoor plants can produce around 700 g each, typically finishing by early September. With strong grower feedback, as well as Sweet Seeds' own trials, Green Poison F1 Fast Version deserves its place on our list due to its fast-growing weed seeds, which combine speed, heavy resin production, and a compact structure, making it perfect for efficient harvests.
Jamaican Dream: Eva Seeds
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With a flowering time of only 6–7 weeks, Jamaican Dream from Eva Seeds has earned a reputation as one of the fastest growing cannabis strains with a true sativa spirit. This is a 90% sativa hybrid that develops into a sturdy, pyramid-shaped plant with dense, trichome-rich buds and a sweet, tropical aroma. Indoor yields can easily reach up to 600 g/m², while outdoor projects can produce as much as 1000 g/plant by late September. Jamaican Dream combines rapid growth with an uplifting, energetic high that's ideal for daytime enjoyment.
Hella Jelly: Humboldt Seed Company
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Hella Jelly by Humboldt Seed Company is a fast-flowering strain that embodies the best of modern American genetics. This sativa-dominant hybrid was bred from Notorious THC and Very Cherry, producing sweet, candy-scented buds that combine striking lime-green and pink hues with heavy resin. Indoor plants typically finish within 6–7 weeks, while outdoor growers can expect harvest by mid-to-late September. Easy to grow, stress-resistant, and producing medium to high yields, Hella Jelly offers sweet shop flavours and aromas, along with a euphoric, sociable high that perfectly defines fast-growing weed strains from the US.
Northern Lights: Expert Seeds
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If you want plants ready in just 55 days, Northern Lights by Expert Seeds is a true classic refined for today's growers seeking a fast-flowering photoperiod strain. This 90% indica hybrid is a blend of Afghani, Skunk #1, and Haze genetics, resulting in compact plants with dense, resin-heavy buds that release sweet, musky aromas with hints of earth and honey. Indoor yields can reach around 450 g/m², while outdoor plants can deliver up to 500 g by late September. With 19% THC and a soothing, body-focused high, Northern Lights is a reliable, fast-growing strain that's perfect for relaxing, social sessions or unwinding after a long day.
Tropicanna Poison F1 Fast Version: Sweet Seeds
A standout in both looks and performance, Tropicanna Poison F1 Fast Version from Sweet Seeds races through its flowering phase in only 6–7 weeks. This 60% indica, 40% sativa hybrid unites Tropicanna Cookies and Red Poison Auto, blending vibrant Californian genetics with the speed of an autoflower. Indoors, growers can achieve yields of up to 600 g/m², while outdoors, returns can be as high as 650 g/plant by early September. With its deep pink and red buds, tropical mango flavour, and THC levels peaking at around 24%, Tropicanna Poison F1 Fast Version is a fast-performing cultivar that turns any grow op into a visual and aromatic showcase.
Speedy Chile Fast Flowering: Royal Queen Seeds
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Built for growers who want quick results without sacrificing quality, Speedy Chile Fast Flowering from Royal Queen Seeds lives up to its name with a flowering period of just 6 weeks. This 70% indica, 30% sativa hybrid stems from a potent cross of Green Poison and Chile Indica, producing a compact, resin-rich plant that's perfect for any setup. Indoors, it yields up to 550 g/m², while outdoor plants return with about 500 g each by September, ideal timing for cooler climates. With 16% THC and a relaxing, gently uplifting high, Speedy Chile is a fast-growing weed seed that blends speed, potency, and practicality in equal measures.
Passion #1: Dutch Passion
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A true classic that helped shape European cannabis culture, Passion #1 by Dutch Passion is a hardy, fast-flowering photoperiod strain that finishes bloom in 6–7 weeks. Originating from California, these genetics were introduced to Europe in the 1980s, and this pure indica has become one of the brand's most successful creations. Outdoors, it can soar to 3.5 m tall and yield up to 750 g/plant, thriving in sunny or temperate climates. With earthy, citrus flavours and around 19% THC, Passion #1 delivers a deeply relaxing stone that's perfect for all cannabis enthusiasts.
Quick Caramel XL: Zamnesia Seeds
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If you're after a strain that combines rich flavours with rapid results, Quick Caramel XL by Zamnesia Seeds makes for the perfect pick. This 65% indica, 35% sativa hybrid races to harvest in just 7 weeks, producing compact plants that reach around 1 m in height, with excellent resistance to pests and stress. A cross of White Rhino, BlueBlack, and Maple Leaf Indica, it yields up to 500 g/m² indoors, delivering thick, syrupy buds that taste of caramel and earth. With 17% THC and a smooth, soothing body high, Quick Caramel XL is a fast-growing strain that rewards every level of grower.
Green Tiger: BSF Seeds
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Fast, fierce, and full of flavour, Green Tiger from the team at BSF Seeds strikes hard with a flowering time of only 6 weeks. This 80% indica, 20% sativa hybrid combines Early Skunk and Skunk P90 genetics with a fast-flowering lineage, resulting in a compact yet productive plant that's easy to manage both indoors and outdoors. Expect yields of up to 650 g/m² inside and 600 g/plant outdoors, finishing early for a smooth autumn harvest. Bursting with sweet, fruity, and skunky notes, Green Tiger's 22% THC content delivers a creative and relaxing high, making it one of the most satisfying fast-finishing strains to cultivate in 2025 and beyond.
Super Boof: Zamnesia Seeds
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Crowned Leafly's 2024 Strain of the Year, Super Boof by Zamnesia Seeds, gives home growers the chance to cultivate a modern legend. This 70% indica, 30% sativa hybrid descends from Black Cherry Punch and Tropicanna Cookies, combining sweet, creamy flavours with some serious firepower. Indoors, plants stay compact at around 120 cm and finish flowering in just 7–8 weeks, producing up to 550 g/m². Outdoors, they can stretch up a little higher to 180 cm and yield roughly around 500 g per plant by late September. With 26% THC, dense, frosty buds and aromas of grape, vanilla, and cheese, Super Boof is a fast-growing weed strain with some award-winning pedigree.
Additional quick-flowering photoperiod strains worth considering
Not every fast photoperiod made the final top 10, but these contenders still deserve recognition for their impressive speed, reliability, and flavour. Whether you're chasing variety, unique aromas or subtle differences in effect, these strains are well worth adding to your grow list.
Pure Skunk Go Fast by Kannabia is a resilient 70% indica hybrid that thrives indoors and takes just 6–7 weeks to produce up to 550 g/m² or 600 g/plant outdoors. Highly resistant to pests and ideal for short summers, it offers sweet, earthy flavours with hints of chocolate and a mild, relaxing high perfect for easygoing growers.
Solar Panel from Zamnesia Seeds is another fast-finishing strain to check out, which takes just 7–8 weeks to produce up to 550 g/m² indoors and up to 800 g/plant outdoors. As a potent cross between Power Plant and White Widow, Solar Panel is a high-yielding, quick-flowering strain that blends uplifting energy with soothing relaxation, making it ideal for creative or social moments.
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Your next quick harvest awaits
Fast-flowering photoperiod strains make it easier than ever to enjoy quick, rewarding harvests without compromising yield or quality. Whether you're growing indoors or out, these cultivars offer the ideal balance of speed, potency, and flavour, perfect for anyone eager to shorten their grow cycle or experiment with multiple harvests a year.
Ready to experience it for yourself? Explore our full range of fast-flowering seeds and find the strain that best suits your setup. Or, if you prefer the simplicity of automatic genetics, check out our guide to the top 10 fast autoflowers for even speedier results.
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