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10 Fast-Growing Cannabis Flowers for Impatient Gardeners

Growing cannabis can be an arduous process. Beyond the space, materials, and nutrients needed, time and light are the most essential ingredients in the cannabis cultivation equation. But what if you’re impatient or short on time? Is there a way to speed up the growing process?

Historically, black market growers would seek out or hybridize strains to harness attributes that catered to their surreptitious needs. These plants would usually be short and stalky with larger-than-average yields, and in some instances they would be autoflowering (such as a ruderalis hybrid). They were designed to be fast-flowering for both a quick turnover and so they could be easily relocated from time to time.

The fast-flowering cannabis strains listed below are now emerging for professional and hobby growers to utilize. They’re perfect for novice growers as well as set-it-and-forget-it growers who want to squeeze out a harvest with little time to spare. The list includes a mixture of both photoperiod and autoflowering varieties so you can find the perfect plants for your setup.

Wondering if you can legally grow in your state? Check our state-by-state guide to home cultivation laws to find out.

Photoperiod Strains That Grow Quickly (7-9 Weeks)

Lowryder

Lowryder is a hybrid strain that was inbred for nine generations by Joint Doctor Seeds to give it a dwarfed size. Growing no more than 16 inches tall, it’s the cannabis equivalent of a bonsai for the discrete grower’s windowsill or balcony. Lowryder’s small size comes from a species of cannabis ruderalis crossed with Northern Lights #2 and then William’s Wonder. Consumers, be patient with this strain: its medicinal and cerebrally stimulating effects have a slow but powerful onset. A mild earthy aroma radiates from the small, conic buds which autoflower in a short 40 to 45 days. Lowryder is a stalwart plant that can survive in harsh, colder climates, making it a popular strain in northern regions like Finland and Canada.

Critical Kush

Critical Kush from Barney’s Farm is a mostly indica strain that blends together two famed cannabis staples, Critical Mass and OG Kush. Aromatic notes of earthiness and spice usher in a calming sensation that relaxes the mind and body. Critical Kush pairs a staggeringly high THC content with a moderate dose of CBD, making this strain a perfect nighttime medication for pain, stress, insomnia, and muscle spasms. Growers cultivating this strain indoors will wait 50 to 60 days for Critical Kush to complete its flowering cycle.

Early Girl

Early Girl is the wallflower of cannabis strains since its introduction in the 1980s. Lovingly preserved by the breeders at Sensi Seeds, this strain is lazy and relaxed, nothing over the top. A 75/25 indica-dominant hybrid, Early Girl is a good one for those new to cannabis who would like relief from stress. Also a great strain for novice growers, it’s compact, resilient, and has a particularly short flowering time of 7 to 8 weeks. Early Girl grows especially well outdoors, but won’t put up a fuss if she’s stuck inside.

OG Kush

OG Kush makes up the genetic backbone of West Coast cannabis varieties, but in spite of its ubiquity, its genetic origins remain a mystery. Popular myth maintains that Chemdawg and Hindu Kush parented OG Kush, passing on the distinct “kush” bud structure we see in many strains today. However, we can’t be sure because OG Kush first came from bag seed in the early 90s. The earliest propagators (now known as Imperial Genetics) are said to have brought the seeds out of Florida to Colorado and southern California, where it now flourishes. There are many different phenotypes of OG Kush, some of which include Tahoe OG, SFV OG, and Alpha OG.

OG Kush is cherished for its ability to crush stress under the weight of its heavy euphoria. It carries an earthy pine and sour lemon scent with woody undertones, an aroma that has become the signature of OG Kush varieties and descendants. With OG Kush, patients most commonly cite improvements in migraines, ADD/ADHD, and stress disorders.

Superglue

Superglue is a hybrid strain bred by Seedism Seeds. A cross between Afghani and Northern Lights, Superglue inherits indica growth patterns along with a sweet caramel and pine aroma. Superglue brings calming relaxation to the mind and body, but leaves you functional and energetic enough for social activities or a productive afternoon.

Autoflowering Strains That Grow Quickly (7-12 Weeks)

Red Dwarf

Red Dwarf is a rarer strain of cannabis that is an autoflowering plant. This trait comes from its cannabis ruderalis genetics, which is a third variety of the plant that’s usually not bred due to its lower THC content. The wonders of selective breeding from Buddha Seeds have resulted in seeds that grow to adulthood in an incredibly short six weeks. This strain’s squat, small plants are easy to grow in smaller spaces, making it a popular choice for growers who want something simple and fast. Indica-dominant, Red Dwarf will eventually make you sleepy, but not without some relaxed euphoria first.

Hobbit

Hobbit by Kannabia Seeds is a resilient autoflowering variety with sweetness and strong elemental resistance. This strain has a sweet aroma that has been described as “strawberry candy” and an equally sweet smoke with latent earthy notes. Hobbit deftly combines stimulating Haze elements with a pervasive body buzz that is lightly weighted while remaining pleasant and functional. Many growers covet this autoflowering wonder for its quick 65-day flowering time and above-average yield.

White Ryder

White Ryder is Riot Seeds’ attempt to create a ruderalis version of White Widow by crossing Buddha Seeds’ White Dwarf against Lowryder. By blending two stout, autoflowering plants, Riot Seeds created a potent indica-dominant hybrid that finishes in under 80 days and can easily be hidden from view. Enjoy this flower for anti-anxiety and sleep-inducing effects.

Purple Cheese

Purple Cheese is an indica-dominant autoflowering hybrid that combines Purple #1, Blue Cheese, and Lowryder. Bred by Auto Seeds, Purple Cheese was designed to have a sweeter, less cheesy flavor than its Blue Cheese parent. It does, however, inherit a tight bud structure and a high CBD profile. With a palatable fruit aroma, Purple Cheese delivers powerful full-body effects best suited for night owls or patients treating pain. Colder climates will bring out this hybrid’s purple hues, and for best results, growers should keep this autoflowering variety between 50-80 cm in height.

Royal Haze

Royal Haze (or Royale Haze) by Dinafem Seeds is a mostly sativa strain bred from Skunk, Haze, and Northern Lights genetics. Taking after her Haze parent, this sativa inherits a spicy citrus flavor and buzzing, energetic effects that keep you alert and productive throughout the day. Outdoor growers will appreciate her flexibility and resilience even when the temperature drops, although her 10-11 week flowering cycle demands a bit of patience.

An autoflowering rendition of Royal Haze was bred by Royal Queen Seeds, who mixed Amnesia Haze, Skunk, and a ruderalis strain. Its effects are similarly energizing and cerebral.

These fast-flowering cannabis strains are perfect for novice growers as well as set-it-and-forget-it growers who want to squeeze out a harvest with little time to spare.

Top 8 Fastest-Growing Weed Strains For Growers In A Hurry

You haven’t chosen a cannabis strain to grow yet, but already can’t wait to lit that delicious bud? When the temptation is too strong, some strains work better than others. Luckily, Herbies knows what seed to plant if you want to harvest your newly home-grown weed sooner than you can say “fastest-growing marijuana”, the topic we’re covering today. If you’re one of our impatient growers, keep reading to learn about the fastest flowering strains of weed that won’t make you wait for too long.

Fast Flowering Cannabis Strains

Fast Growing Weed Seeds: Who Are They For?

Actually, when it comes to the fastest marijuana strains, their practical application is much wider than the simple goal of getting to smoke the product as soon as possible. The strains we’re about to present have gained recognition because they save growers in plenty of situations.

High THC Strains

First of all, if you live in a colder region with a short summer but still want to benefit from the perks of outdoor growing, fast-growing weed seeds that achieve maturity in 2 months or even less might be your only option to do so. Then, there are stealthy growers who understand that every extra day of having marijuana plants out is another chance of getting caught, so they value the rapid lifecycle. Moreover, the fastest growing weed usually also stays the most compact, which is another pro for a stealthy grower. Finally, these strains allow for not just one but two outdoor harvests in a single season! So, sometimes, it’s not only about the speed but also the productivity of your crop.

Introducing Our Fastest Flowering Strains

Now that you know how you can benefit from having fast flowering cannabis strains in your garden, let’s get down to business. In the list below, you can find our picks for the speediest marijuana plants that can be planted even late in the season and still be successfully harvested.

    Autoflowering The real thing! 15 – 20 % 350 – 500 g/m² indoors30 – 150 g/plant outdoors

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+ Speed Auto

49 days from seed to harvest

One of the fastest autoflowering strains out there, + Speed Auto fully deserves its name, because finishing in way under 2 months is speed itself! When grown in southern areas with longer summers, you can make this weed variety pull off three harvests in one season! As for the result, you’ll harvest up to 150g (5.2 oz) of thick, resin-laden buds with 20% THC and a touch of CBD. Flavor-wise, each toke of + Speed Auto will give you a piece of blue cheese dipped in honey, making for a perfect sweet and savory mix.

    Autoflowering 19 – 23 % Today is the best day 400 – 550 g/m² indoors50 – 250 g/plant outdoors

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Californian Snow Auto

56 days from seed to harvest

This entry from FastBuds, Californian Snow Auto, is a very fast autoflower that delivers the potency of 23% THC to easily sweep you off your feet. Such power is camouflaged with an innocent flavor and aroma palette of sweet and berry-like notes, while the flavorful smoke is quick to induce highly energetic and euphoric effects. However, this weed strain can be used not only recreationally but medicinally as well. Thanks to a healthy share of CBD added to its THC content, Californian Snow Auto is widely used to treat symptoms of glaucoma, multiple sclerosis, and chronic pain.

    Autoflowering Crushing blow 21 % 650 g/m² indoors50 – 150 g/plant outdoors

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Extreme Impact Auto

56 days from seed to harvest

The name Extreme Impact Auto by Heavyweight Seeds hints to the fact that this very fast autoflower makes the most bang in the shortest amount of time. In just 8 weeks of easy growing, you get an almost pure Indica plant with 21% THC to turn you into stone with one good hit of its dense smoke. Perfectly suited for night and weekend use, Extreme Impact Auto will relax your body and mind to the max. You simply must try this citrusy masterpiece!

    Autoflowering Smoky dream 20 % 325 – 400 g/m² indoors120 – 170 g/plant outdoors

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Royal Gorilla Automatic

56-70 days from seed to harvest

A lovechild of two of the most popular genetics in the world, Cookies and Gorilla, Royal Gorilla Automatic by RQS is not only one of the fastest autoflowering strains available for purchase, but also one that provides a highly memorable smoking experience. Powered by 20% THC, the effects of this strain start off with a strong euphoric rush and soon turn into a deep stone that will lock you to the couch with unbreakable chains of its mainly Indica profile. Royal Gorilla Auto’s flavor palette stands out as well by mixing creamy cake batter with notes of hash – you’ve got to try this one!

    Photoperiod Sweet body relaxation 18 – 23 % 400 – 550 g/m² indoors350 – 600 g/plant outdoors

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Sweet Skunk F1 Fast Version

Indoors: 42-49 days of flowering / Outdoors: early September

This next cannabis strain on our list of fastest-growing marijuana is Sweet Skunk F1 Fast Version, a tale of opposites attract. This weed variety finishes flowering in as little as 6 weeks and stuns growers with a combination of sugary and skunky flavors. The 23% THC in its composition combined with its 35/65 Sativa/Indica genetic profile makes its effects a fruitful clash of body relaxation and energetic head high. Such a balanced nature is favored not only by regular growers but also professionals of the field – in 2016, Sweet Skunk F1 Fast Version won first prize in the Indoor category at II Copa Cata Zona Norte.

    Photoperiod A flower of calmness 25 % 450 g/m² indoors 900 g/plant outdoors

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Sugar Black Rose Early Version

Indoors: 45 days of flowering / Outdoors: early September

Another fast version developed due to the huge demand for the original, Sugar Black Rose Early Version from Delicious Seeds is highly sought after by cannabis connoisseurs all over the globe – firstly, of course, because it finishes flowering in just 45 days, and secondly, because it’s by far one of the tastiest strains of cannabis out there. Its long-lasting flavor is a journey by itself, taking you from ripe fruit and fragrant flowers to spice and classic skunk. Finally, the outstanding potency of its 25% THC makes this weed variety simply perfect – a crowd-pleaser that everyone falls instantly in love with.

    Photoperiod Sweet Kushy dreams 15 – 20 % 475 – 525 g/m² indoors450 – 500 g/plant outdoors

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Candy Kush Express

Indoors: 49 days of flowering / Outdoors: early September

Royal Queen Seeds’ Candy Kush Express is a fast-flowering cannabis variety that’s sure to please your senses. Its flavors are reminiscent of winter desserts that are heavy on fruit, citrus, and fragrant spice. No wonder there’s so much flavor, because this strain’s huge buds are so dense, they look like they have a lot packed in them! And not just flavor, either – finishing in just 49 days, Candy Kush Express delivers up to 20% THC, guaranteeing a wonderful hybrid effect that balances a cerebral high and body buzz.

    Photoperiod 25 % Cerebral stone

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Bruce Banner #3 Fast

Indoors: 50-55 days of flowering / Outdoors: September

We’d be surprised if you haven’t already heard of the legendary strain named after the man behind Hulk, and one that provides some of the deepest stone effects known to humanity. Finally, it’s become available as a Bruce Banner #3 Fast, as developed by Original Sensible Seeds. The shorter flowering period of 50-55 days certainly doesn’t hurt the always mind-blowing potency of this cannabis strain, which stays at a sky-high 25% THC. In fact, Bruce Banner #3 cannabis strain tastes and smells exactly the same as the original, and provides resinous buds that exude notes of fruit and Kush.

Pick Your Favorite And Harvest In Less Than No Time

We really hope you enjoyed this list of the fastest flowering strains of cannabis available for purchase, because we sure did! So many outstanding varieties in one place – do you know what you’re going to start with for your next quick harvest? Go to the comments section below and share your experience with fellow growers who are also interested in harvesting quick and big.

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We know what seed to plant if you want to harvest your newly home-grown weed sooner than you can say fastest-growing marijuana, the topic we’re covering today