The Best Medical Strains to Grow in Oklahoma

Growing cannabis in Oklahoma comes with a few challenges. One of the major concerns is that the state is in the center of Tornado Alley. Because of its location, Oklahoma has an active severe weather season that spans from March through June, reaching its peak around April and May.

Oklahoma typically experiences tornadoes and hailstorms in the spring. The state may also suffer from temperature fluctuations, droughts, and heavy rainfall. Despite these severe weather swings, growing cannabis strains in Oklahoma isn’t impossible. Oklahoma even overshadowed California in 2021, with over 9,000 licensed growers.

The secret to successfully growing a cannabis plant outdoors (whether feminized or autoflower) in Oklahoma is a greenhouse. Due to the state’s climate, it’s hard to predict when the weather will turn. Hence, a greenhouse’s controlled environment is vital for a successful harvest.

In addition to growing in a greenhouse, you must start your seedlings indoors to get a headstart in April, when the last frost finally ends and the weather clears. That way, you have ample time to veg your cannabis plants, which is crucial if you want high yields.

Jack Herer

Jack Herer Feminized Seeds

Jack Herer is one of the most popular strains in the world. It was first bred for marijuana patients due to genetics that delivered happy and soothing feelings combined with potent properties for therapeutic use.

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Jack Herer is an excellent strain for Oklahoma growers. While this sativa-dominant hybrid prefers Mediterranean-like climates, it flourishes in the humid subtropical environment of Oklahoma. In addition to growing in the state's hot and humid summers, this strain finishes flowering before the first frost settles in.

In Oklahoma, the first frost occurs at the end of October or the start of November, while the last frost is around late March or early April. That hypothetically gives Oklahoma a growing season of 190 days. However, in Tornado Alley, many days are prone to high winds and other nasty weather conditions. That’s why a greenhouse is a necessity. If you can’t start your cannabis seeds indoors, you can always grow Jack Herer Auto, which has a shorter growth cycle.

Jack Herer cultivar profile

Power Plant

Power Plant Feminized Seeds

Power Plant has medium to high CBD content, but it is most often enjoyed by recreational users. This is because it gives the user a feeling of happiness and joy, causing the user to become more social and talkative.

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Power Plant is a sativa-dominant strain made by Dutch Passion in 1997. It was developed by stabilizing the genetics of a South African heirloom through selective breeding, resulting in a high-yielding and fast-flowering strain. This sativa-hybrid flourishes in Oklahoma’s humid subtropical climate.

With Power Plant’s fast-flowering trait, it will typically be ready to harvest in early October, before the first frost. Growers can expect a considerable outdoor yield of 21 to 26 ounces of flower, with a THC concentration of up to 15%.

Power Plant cultivar profile

Super Skunk

Super Skunk Feminized Seeds

Super Skunk is a popular strain known for its intensely skunky fragrance and balanced hybrid effects. Clear and precise thoughts are met with overall good vibes with this stinky strain out of Super Skunk seeds.

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For a hardy and easy cannabis strain to grow, look no further than Super Skunk. After its development in the 1980s, this indica-dominant strain followed Skunk #1 as the next decade-defining hybrid.

The breeders at Sensi Seeds worked hard while creating Super Skunk. They had already embraced the idea of returning Skunk #1 to its Afghani roots by breeding it with an Afghani heirloom. The biggest challenge was finding a suitable Afghani variety to use. After expanding their selection of marijuana strains, Sensi Seeds bred an Afghani indica variety with Skunk #1, creating what we now know as the hardy and vigorous Super Skunk.

Creating Super Skunk led to massive breakthroughs in cannabis hybridization. These breakthroughs made this indica-hybrid extremely potent. Due to its popularity, it is even available in an autoflower variant.

Many growers find Super Skunk thrives well in Oklahoma's humid subtropical climate. Since it finishes flowering by late September or early October, Super Skunk plants are often ready for harvest before the first frost. Super Skunk could be an excellent option for a hardy and high-yielding cultivar to grow in Tornado Alley.

Super Skunk cultivar profile

Orange Bud

Orange Bud Feminized Seeds

When it comes to all-time classic flavors, Orange Bud seeds has to be at the top of the list. Its taste and aroma are truly distinct, touching people's lives everywhere.

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Orange Bud is a sativa-dominant strain from Dutch Passion. It thrives well in Oklahoma’s subtropical climate, flourishing in its hot and humid summers. This sativa-hybrid is one of the best strains to grow in Tornado Alley because it finishes its flowering phase before Oklahoma’s first frost. You can expect to harvest Orange Bud plants by early October, yielding around 17 ounces of flower per plant.

If you want a successful harvest of this classic sativa-hybrid, you must grow it in a greenhouse. Oklahoma’s unpredictable weather, which ranges from drought to heavy rainfall, makes outdoor cannabis cultivation difficult. The state’s high winds can also ruin your plants.

Orange Bud cultivar profile

Strawberry Cough

Strawberry Cough feminized seeds

Strawberry Cough seeds delivers a fruity sweetness and a clear-headed high. This sativa-dominant strain truly smells and tastes like strawberries.

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If you want a flavorful cannabis strain to grow in Oklahoma, try cultivating Strawberry Cough. True to its name, this sativa-hybrid strain delivers the taste and aroma of strawberries. It gets a lot of its scent and flavor from Strawberry Fields. This indica strain is rumored to have first grown next to a strawberry field to hide the smell of cannabis and ended up taking on the fragrance and flavor of strawberries.

Strawberry Cough is best grown in a greenhouse to avoid Oklahoma’s severe weather conditions. The greenhouse provides a controlled growing environment, encouraging this sativa hybrid’s famously vigorous growth.

Strawberry Cough cultivar profile

Durban Poison

Durban Poison Feminized Seeds

Durban Poison is a pure sativa named after its city of origin: Durban, South Africa. Despite its name, it is a delightful strain that gives the user energy, joy, and creativity.

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Some strains smoothly adapt to Oklahoma’s climate as if it were their natural habitat. One of those strains is Durban Poison, a sativa heirloom that grows best in a hot and humid environment like Oklahoma.

When grown in its preferred climate, Durban Poison is ready for harvest by the end of September. When grown in dry, less-than-ideal conditions, the plants take longer to flower and typically finish by mid-October instead.

This pure sativa strain also has an autoflowering variety that is easier to cultivate and has a shorter growth time. If you’re new to Oklahoma’s climate and want to get some practice first, try Durban Poison Auto seeds before switching to feminized marijuana seeds.

Durban Poison cultivar profile

Banana Kush

Banana Kush Feminized Seeds

Banana Kush is a fragrant, social smoke that delivers a sweet, mellow buzz. It is very popular on the US West Coast for its flavor, scent and effect. Its stimulating buzz makes it a go-to for artists.

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Similarly, Banana Kush has an autoflowering variant that's perfect for trying before attempting to grow the feminized strain. Banana Kush is also on this list because this cultivar loves the bright and sunny days that Oklahoma experiences after severe weather.

When given enough sunshine and a warm environment, Banana Kush thrives during its veg phase. However, to harvest successfully, you must provide a dry climate, which means growing this indica-hybrid in a greenhouse.

Banana Kush cultivar profile

Purple Haze

Purple Haze Feminized Seeds

Do you want to experience a high so great they named it after one of Hendrix's classics? You need Purple Haze seeds!

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Purple Haze is an excellent strain to grow in Oklahoma because it produces robust cannabis plants. This sativa-hybrid’s vigor shows as early as germination, with strong sprouts and hardy seedlings. Once the seedlings are ready to veg, you can transplant them directly into the ground or a large pot, preferably inside a greenhouse.

Our growers recommend topping your Purple Haze plants when growing them in a greenhouse. As a sativa-hybrid, Purple Haze plants reach heights of up to 7 feet. In addition to topping, you should also ScrOG so the branches grow outwards rather than upwards. You may also need to lollipop your plants for the best result. While that’s a lot of effort, Purple Haze plants reward you with up to 25 ounces of flowers per plant by October.

Purple Haze cultivar profile

Blue Cheese

Blue Cheese Feminized Seeds

Blue Cheese seeds are known to grow a sweet and savory flavored plant. This taste is just as unique as the euphoric feelings it delivers its user.

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Blue Cheese is an indica-dominant strain that thrives in Oklahoma's humid subtropical climate. When grown under hot and humid conditions, this strain is typically ready for harvest from the end of September to mid-October.

Despite being named after a type of cheese known for its mold, Blue Cheese has a natural resistance against mildew and other fungal diseases. It tolerates under or over-fertilization, which makes it an excellent cultivar for new growers.

If you can’t start your plants indoors, try Blue Cheese’s autoflowering seeds. With a shorter growth cycle, these marijuana seeds will finish vegging and flowering by the frost, even if you start your seeds in April.

Blue Cheese cultivar profile

Granddaddy Purple

Granddaddy Purple Feminized Seeds

This is a product of crossbreeding Purple Urkle and Big Bud, two popular indica strains! If you love indica strains, you are going to fall head over heels in love as this bad grandpa is a 100% PURE indica!

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If you’re looking for an indica-hybrid to grow in Oklahoma and neither Blue Cheese nor Banana Kush interests you, then maybe this classic strain will. Granddaddy Purple is an indica-dominant strain with a flavor and aroma that resembles grapes, making it a favorite among enthusiasts that love berry-flavored strains. Once you’ve tried your own home-grown Granddaddy Purp, you’ll see why this one is well-loved.

Beyond its taste and smell, Granddaddy Purp has potent effects. With THC potency between 17% and 23%, this indica-hybrid will leave you feeling relaxed and sleepy.

ILGM sells feminized and autoflower Granddaddy Purple seeds. Both options require a greenhouse for a successful harvest, or the plants will likely suffer in Oklahoma’s severe weather conditions.

Granddaddy Purple cultivar profile