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10 Fast-Growing Cannabis Plants for Impatient Gardeners

There are a significant number of prospective cannabis growers who are turned off by the fact that cultivating pot is classified as a lengthy and arduous process.

How often have you read online guides that emphasized the expense involved in growing marijuana?

Aside from the nutrients, fans, space, seeds, and soil or growing medium, you have to consider the lengthy flowering period.

Once you include the seedling and vegetative stage, you will find yourself waiting months for your marijuana to harvest. The internet age has spawned an era of impatience; a desire to get things done yesterday. As a result, breeders have busily looked for ways to speed up the weed growing process.

In the old days, those who purchased their seeds from the black market would attempt to create hybrid strains to find attributes suited to clandestine growth, and designed for a fast turnover. As discretion was paramount, indoor growing was essential which meant the ensuing plants would be short and stocky but provide above-average yields. Occasionally, they would use auto-flowering strains . In the end, they were able to benefit from a fast flowering period and a lightning-quick turnover.

Today, this knowledge has been gathered and updated. As a result, novice growers can utilize a huge array of cannabis strains with short flowering times. It is even possible to shorten the vegetative period in certain strains, which means professional growers can churn out multiple harvests each year.

In this guide, we have located ten marijuana strains that grow exceedingly quickly; the best short flowering strains as well as the quickest autoflowering seeds. Imagine finding a strain capable of flowering in just seven weeks! We have included auto-flowering and photoperiod options to increase the likelihood of you finding the perfect marijuana strain for your needs. Before you start, lease make sure that it is legal to grow cannabis in your state of residence and that you remain within the legal limits.

Best Short Flowering Strains: Photoperiod Strains That Grow Quickly (7-9 Weeks)

These strains have a shorter flowering period, which helps make sure they’re ready for harvest relatively quickly. These strains are ideal for impatient gardeners that really just want their flower to be available as soon as possible.

1 – Lowryder (Hybrid Cannabis Strain)

Although it is classified as a hybrid, Lowryder is very close to being a balanced 50/50 strain. It was inbred for an incredible nine generations by Joint Doctor Seeds, which is why it has its famous diminutive size.

Often compared to Bonsai trees, Lowryder is a tiny but mighty marijuana strain that seldom grows higher than 16-inches; a fact that makes it perfect for indoor grows with limited space.

It is a tough plant capable of surviving in harsh climates, which is why it is grown in places such as Finland, Alaska, and Canada. It is regarded as an all-time classic hybrid and is a cross of Willy’s Wonder and Northern Lights #2. With a THC content ranging from 12% to 20%, Lowryder is a strain suitable for most novices, so long as they use it responsibly.

It is one of the easiest strains on the market to grow because it requires very little maintenance above the bare minimum. With a flowering time of just 40-45 days, Lowryder can provide you with its energetic high in double quick time, and it clocks in just below many of the popular choice 50 day flowering strains! It produces around 12 ounces per square meter planted when grown indoors.

Lowryder is a fragrant strain with an aroma reminiscent of Christmas. A combination of a sweet and piney scent is a real treat to the senses. Once you have a few smokes, you will definitely enjoy the fruity flavor, although you should be wary of the strong aftertaste.

It is popular among creative individuals such as musicians and writers because it helps inspire creativity. It offers relaxation without causing the body to ever feel heavy. The cerebral buzz eventually makes its way to your body, and don’t be surprised if you end up in a fit of giggles!

You can use Lowryder as a daytime strain because your mind remains clear. It is also known as an excellent strain for socializing, so feel free to take some before hanging out with friends. However, as it is a hybrid, it has been known to make some users feel sleepy. We recommend experimenting at home to see how it affects you. Lowryder has been used to treat insomnia and chronic stress disorders .

2 – Critical Kush (Indica Cannabis Strain)

Critical Kush is an extremely powerful and potent marijuana strain that is NOT for new users! It is an indica dominant (90%) hybrid created by Barney’s Farm Seeds. Although Critical Kush is technically a hybrid created from a cross of OG Kush and Critical Mass , its effects are predominantly indica.

Growing Critical Kush is fairly easy, which is unusual for such a potent plant capable of producing high yields.

Although it is tough enough to withstand adverse climate conditions, it grows best in warm and temperate conditions. It can complete its flowering cycle in just 50-60 days, and some growers have reported a staggering indoor yield of 21 ounces per square meter.

If you decide to grow Critical Kush, be VERY careful when using it! It has an exceptionally high THC content of up to 25% and is capable of hitting you like an express train. It is 100% a marijuana strain for late evening or night time use because it induces couch-lock fairly quickly.

In higher doses, Critical Kush will make you feel sleepy , so we say it’s best left for when your day is finished. Users often report a feeling of euphoria, and while it changes your mood for the better, you won’t be able to do much other than sit or lie down and enjoy the experience.

It is an aromatic strain known for its earthy scent that carries the merest hint of sourness. It offers a creamy, herb-like taste with a slight touch of citrus. Critical Kush has become one of the most popular medical marijuana strains and is used to treat and manage a host of conditions. It is championed by many as an excellent stress-reduction tool, and also has pain relieving qualities. That’s why MMJ cardholders use it to treat migraines, muscle spasms , back pains, and a variety of other inflammatory conditions.

3 – Early Girl (Indica Cannabis Strain)

Occasionally referred to as ‘the girl next door’ within the marijuana community, this indica dominant (75%) hybrid is known for its rapid flowering time of 7-8 weeks. Early Girl was created by Sensi Seeds in the 1980s when the famous breeder crossed Afghani and other northern Indian Indica strains with a potent Mexican Sativa.

If you are a new marijuana grower looking for an effective stress-buster, the Early Girl strain is your girl!

As well as being easy to grow, Early Girl is highly resistant to the majority of pests and molds . It is also a durable plant which is more forgiving than most when it comes to making amateur mistakes. Early Girl grows equally well in soil or in a hydroponics setup, and the Sea of Green technique is an excellent method of improving yield. You can expect 14-18 ounces of bud per square meter.

Although Early Girl’s THC content goes as high as 20%, you can find versions with just 12% THC. Either way, this strain is very different from Critical Kush because it provides you with a gentle, yet noticeable, high. At the start, you will feel clear-minded, and before you know it, your mood has improved and you become more amiable and chattier.

Although Early Girl is relatively potent, you never feel overwhelmed. While you won’t experience a sudden burst of energy, you will enjoy the feeling of euphoria that makes you more sociable. Eventually, the indica part really kicks in to soothe and relax the body. It is not a strain for a secret outdoor smoke due to its pungent lemon scent, but its tangy citrus and pine flavor is a real treat.

In the medical world, Early Girl is preferred by patients in search of a mood booster . As a result, individuals with depression may find this strain to their tastes. While it is not regarded as a potent strain, chronic pain sufferers suggest that its long-lasting and even effects are just what the doctor ordered.

4 – OG Kush (Hybrid Cannabis Strain)

This marijuana strain is one of the most famous West Coast varieties, and its origins are as mysterious as this weed is delicious! According to one story, the ‘OG’ relates to OverGrown.com, which was the largest cannabis site in the world until the Canadian government spoiled the fun and shut it down in 2006. Another tale suggests it is an homage to Original Gangster, a famous California strain.

OG Kush is said to be a cross of Hindu Kush and Chemdawg , but since it came from bag seed in the 1990s, it is difficult to say this is a fact. Imperial Genetics has been credited with bringing the seeds to Colorado and Southern California from Florida, and there are several well-known phenotypes of the strain, including Alpha OG and Tahoe OG.

OG Kush is an indica-dominant (75%) hybrid that has a high THC content of up to 26%, and its indica properties come to the fore as soon as you use it.

OG Kush is notoriously strong and can easily prove too much to handle for inexperienced users. It hits you hard almost immediately with a potent euphoric high coupled with a powerful cerebral buzz and a shot of energy.

However, once the initial effects wear off, OG Kush gets to work on your body, and soon you will feel chilled out, relaxed, and happy. It is an ideal strain to use at the end of a hard day at work, but be careful; some users have reported feeling spaced out after using it. This strain is also associated with the munchies .

OG Kush is famous for its strong, earthy scent with sticky, resinous buds as a feature of the strain. It tastes a lot like it smells; fresh and earthy, with a subtle woody texture along with a semblance of spice. As a medical marijuana option, OG Kush is often used to provide muscular relaxation, and long-lasting relief from nausea , migraines and chronic pain. It is also a popular option among those with anxiety or depression. OG Kush has a flowering time of around eight weeks and typically yields up to 17 ounces per square meter.

5 – Superglue (Hybrid Cannabis Strain)

If you’ve ever worked in an office, there will be days where you will do just about anything to break the monotony. While Superglue is not the right option when at work due to its sedative effects, it is perfect for when you get home and want to relax after a day you would rather forget.

This hybrid strain is slightly indica biased (60%) and was created by Seedism Seeds. It is a cross of Northern Lights and Afghani. With a THC content ranging from 18 to 23%, it is a marijuana strain that warrants respect. After a few tokes, you’ll feel uplifted by a potent cerebral high.

Although it enables you to stay functioning at work, we believe Superglue is a better strain to use at home because the indica side takes over and begins relaxing the body. Superglue’s sedative effects really creep up on you, and soon you’ll succumb to couch-lock – not a good look when you have to file an office report!

The strain gets the name ‘Superglue’ because users are typically glued to their sofa or bed soon after using it!

It is a relatively difficult strain to grow because of its susceptibility to mold . Superglue also develops large colas, so make sure there is good airflow in the grow room. It will thrive if you grow it indoors or outdoors, but if you stay inside it will flower in as little as eight weeks. You should benefit from a yield of 14 to 18 ounces per square meter planted.

Superglue’s strong diesel scent may be off-putting to some, and its woody, chemical, and citrus flavor pattern is an acquired taste. While you may think it doesn’t sound appetizing, we can assure you that it tastes fantastic. Superglue is used by people with depression and has also been a helpful aid for insomniacs. Once the effects begin to wear off, you’re likely to feel extremely hungry.

Quickest Autoflowering Seeds: Fast-Growing Cannabis Flowers (7-12 Weeks)

In addition to cannabis strains with short flowering periods, there is a second classification of speedy weedy options, which are referred to as auto-flowering strains.

6 – Red Dwarf (Indica Cannabis Strain)

Red Dwarf is a special Skunk variety strain that is an extremely rare auto-flowering plant. It possesses cannabis ruderalis genetics , which is the third type of marijuana plant (aside from indica and sativa). Ruderalis is said to have grown in the Soviet Union and Russia in general and is known for its ability to thrive in harsh climates.

Red Dwarf was created by Buddha Seeds, and it is renowned for its remarkably fast flowering time of just six weeks!

Although it has ruderalis genetics , Red Dwarf is a pure indica and a cross of ruderalis and a White Dwarf phenotype. Aside from the rapid flowering time, this strain is adored by indoor growers because it grows small and squat, which makes it easy to grow in a smaller space. Seriously, you can place a few pots in a broom closet and it will provide more than enough room! Moreover, it is possible to grow up to 16 ounces of bud per square meter planted.

Once you grow Red Dwarf, please note that it has an extremely pungent odor which makes it tough to conceal. You will feel almost instant sedation when you use this strain with moderate couch-lock that keeps you awake but utterly relaxed. It is definitely a bad choice of smoke at work because you will be easily distracted and spaced out. It won’t take a detective to figure out that you are completely stoned!

In medical terms, Red Dwarf is favored by patients with conditions such as tension headaches, migraines, chronic pain, appetite loss , inflammation, stress, and nausea. The bud has a scent and taste that reminds you of coffee, and the nugs are rather hairy and coated with beautiful white trichomes. It has a THC content of between 7% and 15%, making it mild enough for new users.

7 – Hobbit (Hybrid Cannabis Strain)

This is an extremely alluring strain developed by Kannabia Seeds. Noted for producing a high yield despite a short flowering time of 65 days, this auto-flowering marvel is becoming very popular. It is a balanced hybrid and a cross of Ginger Ale and an unknown Ruderalis strain. As a consequence, Hobbit is a fairly balanced mix of sativa, indica, and ruderalis, a rarity in the world of weed.

As you can probably guess, Hobbit was named after the famed characters from the Lord of the Rings novels. While its THC content can be described as ‘above average’ at 15%, it is not a strain that will knock you flat out. Indeed, the high is every bit as balanced as one might hope, which means it can be used in the morning, evening, or at night. For most users, it is the strain of choice when they wish to relax with friends and have a day of pure laziness.

Soon after using Hobbit, you should experience a feeling of relaxation and happiness. Don’t be surprised if you develop a sudden appetite. Eventually, you feel a slight tingle in the forehead and behind the eyes. Next, the high makes its way to the rest of your body and ensures you feel a little bit sleepy. However, we have to emphasize this fact; you should be in a state of complete bliss throughout.

Hobbit is used to treat a wide range of conditions including insomnia, depression, hypertension, and mood swings. It is especially useful if you have chronic pain and find it difficult to sleep. The sweet aroma is pleasant, and the sugary strawberry taste makes you want to come back for more. When you grow Hobbit indoors, you can get up to an ounce per seed. However, when you grow outdoors, the yield swells to over two ounces per seed. As it is highly resistant to fungus and pests , Hobbit is ideal for newcomers prone to making mistakes.

8 – White Ryder (Hybrid Cannabis Strain)

Riot Seeds developed White Ryder , which is a cross of Lowryder and White Dwarf. It is a fascinating attempt at creating a Ruderalis version of the famed White Widow strain.

Thanks to the efforts of this particular breeder, you now have access to a strong indica dominant hybrid that auto-flowers in less than 80 days.

The Ruderalis genetics means it grows relatively short and squat, perfect for indoor growers! Also, when we say it is strong, we mean it. With a THC content of up to 24%, White Ryder is probably a strain best avoided by inexperienced users . If you decide to use it in any case, make sure you begin with a small dose. It doesn’t take long to get to work as you should feel an almost immediate uplifting cerebral high that initially clears the mind and helps you focus on certain tasks.

However, we don’t recommend White Ryder for morning or afternoon use. The initial mental stimulation you feel is soon replaced by a feeling of full body relaxation. Before you know it, all you want to do is find the nearest place to sit down as couch-lock takes full effect. Eventually, you will struggle to move so if you take this before or during work, you will regret it. It is best used in the evening to help you wind down and chill out.

White Dwarf is said to be effective as medical marijuana. Its sedative effects make it a great option if you suffer from insomnia. Have a few tokes about an hour before bed, listen to some good music, and drift peacefully off to sleep. White Dwarf is also great if you need to alleviate the yolk of body pain . Finally, it is a strain that may have some merit if you suffer from depression or an anxiety disorder.

9 – Purple Cheese (Hybrid Cannabis Strain)

This strain sounds like cheese that has been left out too long but trust us; it is one of the finest fast-growing auto-flowering marijuana strains you’ll find. It was bred by Auto Seeds and is a cross of Blue Cheese , Lowryder, and Purple No. 1. The breeder wanted a hybrid that didn’t come with the often-intense flavor of Blue Cheese, and they also wanted a relatively high CBD strain , and they have achieved their goal with Purple Cheese.

Purple Cheese is a balanced hybrid with 12-16% THC, but its 4% CBD content ensures you benefit from a balanced high.

When Purple Cheese was initially released, it was considered one of the most potent strains around. If nothing else, this is an indication of how quickly breeders have developed new techniques for growing ultra-powerful strains.

If you’re used to rapid effects, you’ll need patience when using Purple Cheese as the high takes a while to appear. Eventually, you will feel positively euphoric with a clear mind and a lot of energy. When the effects make their way to the body, you’ll have a decided feeling of couch-lock. Overall, the high can last for up to three hours.

Purple Cheese is yet another strain on this list known for how easy it is to grow. It doesn’t take up much vertical space which makes it perfect for an indoor grow.

Although it isn’t quite as short as Lowryder, this plant seldom grows higher than 80cm indoors. It should flower within 8-9 weeks and produce up to 14 ounces of bud per square meter planted. Purple Cheese is a unique strain insofar as it allows for two outdoor harvests per year, in July and October.

Users love Purple Cheese because of its delightful fruity aroma. It is less cheesy tasting than Blue Cheese, but you should still enjoy the flavor. Due to its full-body effects and high CBD content , this strain is one of the most popular choices for patients with body pain . It is especially useful if you are suffering from a degenerative condition. Purple Cheese is also used by individuals with depression and it may provide you with some benefit if you suffer from an anxiety disorder .

10 – Royal Haze (Sativa Cannabis Strain)

Also known as Royale Haze , this heavily sativa-dominant (85%) hybrid is filled with exotic flavors that dance on your tongue. It was originally created by Dinafem Seeds and is a cross of Northern Lights, Skunk #1 , and Haze genetics. Royal Queen Seeds has developed an auto-flowering version by crossing Skunk, a Ruderalis strain, and Amnesia Haze .

Not only does Royal Haze have a powerful THC content of up to 20%, but it is also known for providing one of the longest lasting highs. You should feel intense euphoria within moments, but this cerebral buzz is not fleeting. Instead, it can last for hours so its effects may come as a surprise to new users.

Royal Haze is the ideal strain for anyone seeking a mood boost. As well as clearing the mind, it helps drive creativity. The soothing sensation you’re likely to feel towards the back of your head will relax you in ways you can’t even imagine. The body high provided by this marijuana strain is not particularly strong which means you should be able to complete your tasks without a problem.

Royal Haze isn’t a difficult plant to grow, and it is different from most sativas insofar as it has strong stalks.

Its Skunk #1 genetics ensure that it is sturdy and full of branches. It can grow up to 14-feet tall outdoors which makes it a bad choice for a secret marijuana field! It adapts well to Screen of Green and Sea of Green training techniques, but you should perform early topping to manage its height. It flowers in approximately 10 weeks indoors and produces up to 18 ounces of bud per square meter.

The spicy citrus and pine fragrances are pleasant, as are the delicious tropical flavors with citrus lingering on the palate. As you might expect, Royal Haze is valued as a stress reliever and an anti-depressant . It is also used by individuals with PTSD and anxiety. The high THC content means it could also act as an effective painkiller.

Final Quick Tips on Getting to Harvest Faster for Impatient Gardeners

First and foremost, choose one of the ten fast-flowering strains we mentioned above. No matter what tricks you use, certain strains will NOT flower quickly. For example, Hazes are notorious for their lengthy flowering periods. In fact, Haze #1 can take 12-16 weeks! Once you have selected your ideal strain, consider the following for a faster harvest.

1 – Greater light exposure during the vegetative stage

Your marijuana plants will remain in the vegetative stage as long as they receive 14+ hours of light a day. Traditionally, plants grown using an 18/6 cycle (18 hours of light, 6 hours of dark) are more resistant to pests and diseases. However, if you expose your plants to 24 hours of light a day , they will grow faster. As a result, you can force them into the flowering stage sooner.

2 – Begin the flowering stage ASAP

Did you know that non-auto flowering marijuana plants can be flowered directly from their seeds? All you need to do is change the light schedule to ensure your crop is exposed to 12 hours of continuous darkness each day. This process makes your plants believe that winter is coming which means they begin making buds as soon as they are capable.

In most cases, the countdown begins around a month from the planting of the seed, but with certain strains, you can trim a week or two off the timeframe. However, please note that flowering from seed is inefficient because your plants won’t have enough time to grow stems where the buds form.

3 – React to problems quickly

A lot of new growers don’t seem to realize that growth slows down every time your plants gets sick. Every new issue adds days, or even weeks to total growth time if you don’t solve it at warp speed. Key problems to look for include pest infestation, nutrient burn or deficiency, light burn, and heat stress.

Final Thoughts on Fast-Growing Cannabis Flowers

The next time you’re trying to decide which cannabis strain to grow, take into consideration these 10 fast-growing cannabis flowers for even the most impatient of gardeners. Choose from either the best short flowering strains or the quickest autoflowering seeds; either selection will give you the results you’re in need of. As always, be sure to give your plants plenty of tender love and care, so that they can grow up to be strong, healthy, bountiful, and super high-inducing.

Growing with little time to spare and don't have the patience to wait 10 weeks for healthy nugs? Check out these fast flowering cannabis strains.

20 FASTEST Flowering Strains to Grow from Seed

Both autoflowering seeds and photoperiod strains. The fastest flowering cannabis strains to grow from seed to harvest. Ordered by quickest start to finish grow time.

Fastest Flowering Autoflower Strains

Sour Crack Auto

THE FASTEST autoflowering strain that Mephisto Genetics has ever grown, Sour Crack Auto finishes in only 7 weeks from seed (germination). Sour Crack Auto is made from Green Crack Auto and 24 Carat genetics. The short plants stay 20 to 28 inches tall, forming rock hard, resinous buds in quick time. A great strain for commercial quality Sea of Green autoflower grows. High potency nuggets tested near 20% THC.

Grow Time 7 weeks from seed
Strain Breeder Mephisto Genetics
Pack Size 1/3/7/18 seeds
Yield Indoors: 30-60 g/plant
Outdoors: 60 g+/plant

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+ Speed Auto

+ Speed Auto by Sweet Seeds are among the quickest finishing autoflower seeds to grow, being ready to harvest at just 7 weeks from germination. This strain is comprised of the breeder’s own Critical Mass and Speed Devil #2 Auto genetics, bred for yield and deep aromatic properties. + Speed Auto does well both indoors and outdoors. The plants grow 20 to 35 inches in height, producing harvests up to 150 grams each. Tastes sweet, fruity and cheesy.

Grow Time 7 weeks from seed
Strain Breeder Sweet Seeds
Pack Size 3/5/10/25/100 seeds
Yield Indoors: 350-500 g/m2
Outdoors: 30-150 g/plant

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Fast Bud #2 Auto

Fast Bud #2 improves upon Sweet Seeds’ Fast Bud line, a member of the Diesel family of cannabis. This award-winning sativa dominant autoflower strain is quick to mature at 7 to 8 weeks from seed. Only reaching 20 to 35 inches in height, the short plants are multi-branched and form a large number of bud sites, making it an easy strain to grow with very productive yields. Fast Bud #2 Auto has a sweet aroma, exotic taste, strong head high and powerful body stone. 15-20% THC.

Grow Time 7-8 weeks from seed
Strain Breeder Sweet Seeds
Pack Size 3/5/10 seeds
Yield Indoors: 350-500 g/m2
Outdoors: 20-70 g/plant

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Sweet Skunk Auto

Sweet Skunk Auto is one of Sweet Seeds’ best yielding and most resinous autoflower weed strains. Genetically, it’s a hybrid of Early Skunk and Critical Mass, backcrossed twice to Early Skunk. The plants grow rapidly and get 24 to 35 inches tall, finished at just 7½ weeks from germination. Its buds are dense and covered in trichomes. Intense skunk aromas with a sweet and spicy background. Physically relaxing with an uplifting head high. 16-20% THC.

Grow Time 7½ weeks from seed
Strain Breeder Sweet Seeds
Pack Size 3/5/10/25/100 seeds
Yield Indoors: 400-550 g/m2
Outdoors: 35-150 g/plant

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Alaskan Purple Auto

Alaskan Purple Auto by Seedsman, one of the best seed banks, is a 90% indica purple weed strain that produces good yields in short time. It finishes growing at 8 weeks from seed, with some phenotypes ready to harvest at week 7. They are easy growing, sizable plants for an autoflowering strain that mature one week later when grown outdoors. Ripe, fruity sweet flavors and 15-20% THC content.

Grow Time 7-8 weeks from seed
Strain Breeder Seedsman
Pack Size 1/3/5/10/100 seeds
Yield Indoors: 400-550 g/m2
Outdoors: 40-200 g/plant

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Crystal Candy XL Auto

Crystal Candy XL Auto is a large autoflowering marijuana strain, bred from tall phenotypes of Sweet Seeds’ Crystal Candy Auto line. This mostly sativa variety is suitable for both indoor and outdoor growing. The plants reach a height of 35 to 55 inches, ready for harvest at only 8 weeks from seed. Its buds are packed with trichomes and have a very fruity scent. 14-19% THC.

Time 8 weeks from seed
Strain Breeder Sweet Seeds
Pack Size 3/5 seeds
Yield Indoors: 425-650 g/m2
Outdoors: 60-300 g/plant

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Sweet Gelato Auto

Sweet Gelato Auto by Sweet Seeds is an autoflowering version of one of the most prestigious cannabis strains from the Bay Area—Gelato (Sunset Sherbet x Girl Scout Cookies “Thin Mint”)—crossed to Killer Kush Auto. The resulting plants offer generous yields in just 56 days from germination. Its dense buds are covered in large trichomes. The scent is earthy, sweet and fruity with hints of mint and citrus. 18-23% THC.

Grow Time 56 days from seed
Strain Breeder Sweet Seeds
Pack Size 3/5 seeds
Yield Indoors: 375-500 g/m2
Outdoors: 50-175 g/plant

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Sweet Cheese XL Auto

Sweet Cheese XL Auto is a fast and furious Cheese strain that offers greater size, yield and resin production than Sweet Seeds’ original Sweet Cheese Auto. This mostly sativa strain autoflower is ready to harvest at 8 weeks from seed, growing to a height of 30 to 55 inches. It has an intense, remarkably sweet, skunky scent and powerful yet relaxing high. 15-20% THC.

Grow Time 56 days from seed
Strain Breeder Sweet Seeds
Pack Size 3/5/25/100 seeds
Yield Indoors: 375-600 g/m2
Outdoors: 45-190 g/plant

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Chocolate Skunk Auto

A “60 day wonder” strain being ready to cut 60 days from seed germination, Chocolate Skunk Auto by 00 Seeds is an autoflowering hybrid of Chocolate Skunk and ruderalis genetics. The plants grow large for an auto strain at over 40 inches tall. Chocolate Skunk Auto produces beautiful compact, crystal-covered buds that smell great. 17% THC.

Grow Time 60 days from seed
Strain Breeder 00 Seeds
Pack Size 3/5 seeds
Yield Indoors: 250-350 g/m2

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Lemon Pie Auto

Lemon Pie Auto is a fast, potent and productive autoflower variety from Fast Buds Seeds. A good performer indoors and out, this low-maintenance, mostly indica strain shows resistance in less-than-ideal conditions. The plants grow quite compact, staying around 31 to 39 inches tall. Harvest is at 56 to 63 days from germination. Its buds are rich in resin and terpenes with scents of skunk, citrus and sweet pie. Potent—up to 24% THC.

Grow Time 56 to 63 days from seed
Strain Breeder Fast Buds Seeds
Pack Size 1/3/5/10/100 seeds
Yield Indoors: 400-550 g/m2
Outdoors: 50-170 g/plant

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Fastest Flowering Photoperiod Strains

Gigabud

Gigabud is a Big Bud and Northern Lights hybrid that finishes flowering in a speedy 5 to 6 weeks. These thirsty, medium-sized plants grow vigorously in veg and flower, producing massive quantities of resinous, fruity buds. There is also an autoflowering Gigabud strain for sale.

Flowering Time 5-6 weeks
Strain Breeder G13 Labs
Pack Size 5 seeds
Yield 450 g/m2+

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Hash Plant

The famous Sensi Seeds Hash Plant indica originates from Afghani genetics bred in the Northwest United States that were brought to Sensi Seeds in Holland, where it was crossed to another Afghan variety—Northern Lights. Ready to harvest in as quick as 40 days from flowering, Hash Plant seeds grow fast, in a stout, thick manner. The buds are super dense, very sticky and ideal for making hash. A good choice for breeders.

Flowering Time 40-45 days
Strain Breeder Sensi Seeds
Pack Size 10 seeds
Yield 400-500 g/m2

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Green Poison Fast

Green Poison Fast by Sweet Seeds is a top quality weed strain which forms super frosty and tight buds. This unique feminized seed strain was made by breeding out the ruderalis gene present in the original autoflowering Green Poison to create a remarkable, high yielding photoperiod variety. 70% indica genetics are responsible for its fruity, heavy and dank marijuana buds.

Flowering Time 6 weeks
Strain Breeder Sweet Seeds
Pack Size 3/5/10/25/100 seeds
Yield Indoors: 500-600 g/m2
Outdoors: 500-700 g/plant

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Passion #1

Passion #1 is an outdoor indica strain from the seventies in California, which made its way over to Holland during the eighties. This stable, easy to grow regular seed strain gets huge both outdoors and indoors, finishing its flowering cycle in a mere 6 weeks of bloom time. Passion #1’s citrus-like buds are long, dense and full of resin. 18.6% THC content.

Flowering Time 6 weeks
Strain Breeder Dutch Passion
Pack Size 10 seeds
Yield 250-750 g/plant

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Tropicanna Poison F1 Fast

Tropicanna Poison F1 Fast by Sweet Seeds is an excellent fast flowering strain bred for speed and potency. It was created using an elite Tropicanna Cookies clone crossed to a red flower phenotype and Red Poison Auto. Roughly 80% of the resulting plants get red bud coloring. This very productive variety is finished at only 6 to 7 weeks of bloom. The buds are dense, extremely resinous and have intensely sweet scents and flavors. 16-24% THC.

Flowering Time 42-49 days
Strain Breeder Sweet Seeds
Pack Size 3/5 seeds
Yield Indoors: 450-600 g/m2
Outdoors: 400-650 g/plant

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Big Nugs Fast

As the name suggests, Big Nugs Fast grows big nugs—fast. It’s a photoperiod hybrid that’s ready to harvest in only 6 to 7 weeks flowering time. This high yield weed strain is bred from Big Bud / Critical Mass (Afghani x Skunk) crossed to Seedsman’s fast finishing male. Similar to Big Bud, Big Nugs Fast grows thick heavy buds, which may need to be propped up during flowering. Yields are high—expect dense, pine cone-shaped buds with fruity, hashy qualities.

Flowering Time 6-7 weeks
Strain Breeder Seedsman
Pack Size 1/3/5/10/100 seeds
Yield 450-550 g/m2

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C99 x Blueberry Fast

C99 x Blueberry Fast is a rapid flowering, mostly sativa weed strain that’s ready to harvest in just 45 days from the start of bloom cycle. The infamous C99 strain is crossed to Blueberry and then bred with Seedsman’s fast parent, resulting in sativa dominant seeds that finish quick. Its Thai genetics present help C99 x Blueberry Fast grow big during flowering, so expect some stretching. High yields of thick, potent marijuana buds.

Flowering Time 6-7 weeks
Strain Breeder Seedsman
Pack Size 1/3/5/10/100 seeds
Yield 350-450 g/m2

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Gorilla Girl F1 Fast

Gorilla Girl F1 Fast by Sweet Seeds is an extra-fast version of Gorilla Girl featuring extreme potency and production. The sativa dominant plants are ready to harvest after just 7 weeks of flowering. Its buds are known for their high resin content, with calyxes completely covered in frosty trichomes. The aroma and taste are sweet and fruity with earthy, woody notes. Strong effects—up to 24% THC.

Flowering Time 49 days
Strain Breeder Sweet Seeds
Pack Size 3/5 seeds
Yield Indoors: 400-500 g/m2
Outdoors: 350-600 g/plant

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Pineapple Express #2

Pineapple Express #2 is a faster flowering, higher yielding version of G13 Lab’s original Pineapple Express. A favorite weed strain among growers in humid climates, Pineapple Express #2 grows huge outdoors and has high resistance to mold and moisture. Its buds are large, fruity and full of trichomes.

Flowering Time 45-50 days
Strain Breeder G13 Labs
Pack Size 5 seeds
Yield Indoors: 700 g/m2
Outdoors: 900-1300 g/m2

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Pakistan Valley

Originating from the Hindu Kush mountains, Pakistan Valley by WOS is a landrace pure indica cannabis strain that grows quick, finishing its flowering phase in just 45 to 55 days. A compact, vigorous grower, especially suited towards dry climates where its buds bulk up dense and resinous. Super sticky and potent—over 20% THC. For sale as both regular and feminized seeds.

Flowering Time 45-55 days
Strain Breeder World of Seeds
Pack Size 10 seeds
Yield Indoors: 400 g/m2
Outdoors: 700 g/m2

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Both autoflowering seeds and photoperiod strains. The fastest flowering cannabis strains to grow from seed to harvest. Ordered by quickest start to finish