Top 10 Best Outdoor Strains to Grow - 2021 UPDATE

Cannabis varieties Growing

Growing weed outdoors is a unique and rewarding experience. You can see the plants thrive in their natural environment, and you don’t have to worry about expensive electricity bills.

However, to grow weed outdoors successfully, it pays to choose your seeds carefully. This can make a huge difference to the quality of the harvest. 

Here are ten best strains for outdoors to grow in 2021 that will all thrive outdoors as long as the weather isn’t too rainy!

Top 10 – Best outdoor strains [2021 update]

  1. Godfather OG
  2. Grape Ape
  3. OG Kush
  4. Girl Scout Cookies autoflower
  5. Super Silver Haze
  6. Purple Haze
  7. Gorilla Glue autoflower
  8. White Widow
  9. Pineapple Express
  10. Zkittlez

1. Godfather OG

If the original godfather, Don Corleone, was a stoner, you can be sure that Godfather OG weed was his favorite. Like many other legendary strains, she originates from California.

Growing Godfather OG outdoors

Godfather OG feminized seeds do very well when grown outdoors. This is because the strain thrives in both cold and hot climates.

She develops a thick stem and strong branches, but it is advisable to provide extra support when needed. The buds can become quite heavy. Nevertheless, she is classified as easy to grow, with a pleasant resilience that forgives rookie mistakes.

Harvesting ideally takes place in early autumn, between late September and mid-October. The maximum expected yield is around 450 grams per plant.


Godfather OG offers a powerful high and is a popular choice for medicinal use.

Godfather OG feminized seeds Godfather OG feminized seeds
Levels 30% THC / 0.8% CBD
Variety 60% Indica / 40% Sativa
Yield 350 to 650 grams/m²
Flowering time up to 49 days
Growersprofile Beginner

2. Grape Ape

Grape Ape is a powerful Indica named after a cartoon character “Hanna Barbera”. The huge and friendly purple gorilla. The name of this plant is therefore appropriate.

Growing Grape Ape outdoors

If you live somewhere with a stable, temperate climate, Grape Ape is one of the best outdoor weed strains to choose. Especially if you can offer some form of protection if there is a risk of frost.

Although its susceptibility to fungi makes Grape Ape suitable for experienced growers, the plant provides a generous reward.

Grape Ape is in fact a large plant with beautiful purple tones that evoke feelings of friendliness and euphoria. She is ready to harvest quickly and grows over a meter high.


The dense resin covered buds look a bit like chubby blackberries and so does the aroma. Flavors are skunky and earthy.

Grape Ape has a relatively high THC content of about 21% and quickly produces a couch-lock. Ideal for nocturnal use and the reason why it is often chosen by people suffering from insomnia and anxiety. Recreational users especially like the weed to purify the mind while relaxing.

Grape Ape feminized seeds Grape Ape feminized seeds
Levels 21% THC / 0.4% CBD
Variety 80% Indica / 20% Sativa
Yield 350 to 600 grams/m²
Flowering time up to 49 days
Growersprofile Beginner

3. OG Kush

OG Kush feminized cannabis seeds are native to Northern California, the result of a cross of Chemdawg x Lemon Thai x Pakistani Kush. Recommended by Snoop Dogg; what else should you know?

Growing OG Kush outdoors

When growing, the plant will stretch a bit in the beginning, but as soon as the flowering period starts, it will become a nice full plant. Having said that, this cannabis strain is great for outdoor growing.


OG Kush is a cannabis strain with a very distinctive aroma and very powerful effects. The taste of OG Kush when smoked is very complex and consists of different flavors. The effect is intense and powerful, tangible in body and mind.

This cannabis strain is also regularly grown as medicinal cannabis. Growing cannabis from these feminized cannabis seeds produces powerful cannabis that is not suitable for the novice smoker.

OG Kush feminized seeds OG Kush feminized seeds
Levels 20% THC / 0.5% CBD
Variety 75% Indica / 25% Sativa
Yield 425 to 550 grams/m²
Flowering time up to 56 days
Growersprofile Moderate

4. Girl Scout Cookies autoflower

Are we talking about autoflowering varieties? Then we advise you to choose Girl Scout Cookies.

Growing Girl Scout Cookies outdoors

Thanks to her ruderalis genetics, Girl Scout Cookies Auto will complete her life cycle from seed in 8-10 weeks – incredibly fast by any standards!

What’s more, the variety will grow higher than the average autoflowering plant; heights of 60-140 cm are standard with this variety. The plant shows its splendor with curly green calyxes and bright orange pistils, surrounded by green leaves.

When grown outdoors, the strain thrives mainly in warm climates and produces incredible cannabis. This autoflowering version will flower regardless of the number of hours of sunlight. This allows you to harvest multiple crops in one season.

Outdoor growers can collect a stock of about 130-180g / plant.


The effect of girl scout cookies autoflowering weed is described as calming, somewhat euphoric, happy, creative and relaxing. It is therefore a weed that is loved by a wide group of cannabis enthusiasts.

Girl Scout Cookies autoflowering seeds Girl Scout Cookies autoflowering seeds
Levels 22% THC / 0.5% CBD
Variety 60% Indica / 20% Sativa
Yield 250 to 600 grams/m²
Flowering time up to 63 days
Growersprofile Beginner

5. Super Silver Haze

Are you going for big harvests and do you want to grow one of the best outdoor cannabis strains? Then take a look at Super Silver Haze!

Growing Super Silver Haze outdoors

Although she needs a summer in which the humidity is not too high, Super Silver Haze will grow well outdoors. Even in the Dutch climate.

Super Silver Haze is a long flowering cannabis strain and is therefore most suitable in warm countries where it doesn’t rain too often.

During the flowering period a cannabis plant is most vulnerable to rot and mold, while during the growing period it can tolerate more moisture without spoiling. You will therefore have to check the buds of your cannabis plant every day for rot or fungi. Too much rain and too much moisture in the air can cause problems. Especially in the middle of the flowering period.


Super Silver Haze is a real “power plant”. Exactly as you would expect from a sativa dominant plant she is a delicious haze and very popular in coffee shops and with home growers.

Super Silver Haze feminized seeds Super Silver Haze feminized seeds
Levels 21% THC / 0.15% CBD
Variety 20% Indica / 80% Sativa
Yield 600 to 1500 grams/m²
Flowering time up to 70 days
Growersprofile Expert

6. Purple Haze

Purple Haze feminized cannabis seeds were created by crossing Haze with Purple Thai.

Growing Purple Haze outdoors

Purple Haze is one of our most popular cannabis strains. Especially as you can grow this beautiful purple strain outdoors. She is also suitable for a beginner because she is very easy to grow. This is a cannabis plant that can tolerate slightly lower temperatures a little better and is therefore well suited for slightly cooler climates.


Smoking Purple Haze makes you happy, creative and gives you an uplifting feeling. The effect is powerful and noticeable as a Sativa high. Growing cannabis with good quality Purple Haze seeds is a pleasant experience for beginners and experts alike.

Purple Haze feminized seeds Purple Haze feminized seeds
Levels 20% THC / 0.3% CBD
Variety 30% Indica / 70% Sativa
Yield 400 to 450 grams/m²
Flowering time up to 56 days
Growersprofile Moderate

7. Gorilla Glue autoflower

Want to grow marijuana in a convenient way? The Gorilla Glue autoflower is what you need! She is a powerful cross between Sour Dubb x Chocolate Diesel x Chem’s Sister ruderalis.

Growing Gorilla Glue autoflower outdoors

Our outdoor Gorilla Glue autoflower is easy to grow, thanks to its ruderalis genetics. 

This 60% Indica dominant hybrid is known for producing extremely sticky buds and great yields when grown outdoors, with a high THC content of up to 26%. The buds are olive green, with ice-cold white trichomes on top.


The weed also offers medical benefits. For example, to relieve chronic pain, relax the muscles and help with symptoms of insomnia and nausea.

Gorilla Glue Auto gives a strong chemical ‘Diesel’ taste and gives a very powerful, relaxing and uplifting high.

Gorilla Glue autoflowering feminized seeds Gorilla Glue autoflowering feminized seeds
Levels 26% THC / 1% CBD
Variety 50% Indica / 40% Sativa
Yield 350 to 550 grams/m²
Flowering time up to 56 days
Growersprofile Beginner

8. White Widow

Just like Northern Lights, White Widow is a legend of Amsterdam’s coffee shops. She is also easy to grow from seed. Even in the colder climates.

Growing White Widow outdoors

Of course, the White Widow cannot be missing from this top 10. White Widow is one of the most popular and definitely one of the greatest outdoor strains.

The feminized seeds are suitable for outdoor growing. She is resistant to mold and top rot, features a short flowering time and a high yield! When this strain is grown outdoors, she can easily reach two meters in height.

After about 9 weeks White Widow will have transformed into a beautiful harvest-ready cannabis plant. Because she requires little maintenance, she is the ideal plant for the novice grower.

You’ll be amazed at what she has to offer. Under optimal conditions she can yield more than 550-600 grams per plant outdoors.

White Widow is suitable for the Northern European climate, but will give better results in a warmer climate. Experienced growers often choose the White Widow because this cannabis plant is particularly suitable for the Sea of Green growing method.


The effect of White Widow is creative, euphoric, Happy, uplifting and at the same time very relaxed.

White Widow feminized seeds White Widow feminized seeds
Levels 19% THC / 0.2% CBD
Variety 50% Indica / 50% Sativa
Yield 450 to 600 grams/m²
Flowering time up to 60 days
Growersprofile Moderate

9. Pineapple Express

If you are a fan of the movie of the same name, the Pineapple Express will not disappoint you!

Growing Pineapple Express outdoors

Pineapple Express is a great strain to grow outdoors. The difficulty level of this plant is quite high, but for the experienced grower she will be a simple strain that also gives great results. Just make sure you have enough support and a lot of attention, especially in the early stages.

The feminized marijuana seeds of Pineapple Express can grow into quite tall cannabis plants and have a short flowering time. You can look forward to seeing many buds full of THC at the end of the flowering phase.


It’s a species with a rare and delicious tropical flavor with strong pineapple accents, interspersed with citrus and peach flavors. The taste of the weed is a delicious tropical blend of strawberry and sweet pineapple that the connoisseur will certainly appreciate.

The effect of smoking this cannabis is a sensational, uninhibited and relaxing experience. We should also mention that this cannabis strain stimulates sexual feelings. It also has a medicinal effect that can help people with anxiety.

Pineapple Express feminized seeds Pineapple Express feminized seeds
Levels 19% THC / 0.3% CBD
Variety 70% Indica / 30% Sativa
Yield 450 to 800 grams/m²
Flowering time up to 55 days
Growersprofile Moderate

10. Zkittlez

We conclude our top 10 best outdoor cannabis strains with Zkittlez.

Zkittlez is really a remarkable species. She became especially popular after winning the Emerald Cup in 2016 and the Cannabis Cup in both San Francisco and Michigan. Zkittlez is an 80% Indica and 20% Sativa strain descended from Grape Ape and Grapefruit. These are both very renowned cannabis varieties. 

Growing Zkittlez outdoors

Zkittlez grows relatively large for an Indica plant, with a large apical bud and firm bud formation on the side branches. The flowering period is relatively short, with a duration of about eight weeks. However, we recommend that you let the buds flower for an extra week for optimal results.

Indoor growers will be lucky to have 500-700 g/m² of glistening Zkittlez bud. Outdoor growers can harvest up to 400-600g / plant.

Growing weed outdoors is now easier than ever, thanks to these great seeds, all of which you can buy at Weedseedsexpress!


Zkittlez contains 20-24% THC, which is super potent. Logically, users of this delicious weed can expect powerful and extraordinary experiences.

The uplifting, optimistic and cheerful feelings can be felt after just a few puffs. Physically relaxing sensations and soothing thoughts are also present. The scent of this strain is characterized by sweet, candy-like aromas, with some spicy berries and a spicy touch.

Zkittlez feminized seeds Zkittlez feminized seeds
Levels 24% THC / 0.5% CBD
Variety 80% Indica / 20% Sativa
Yield 500 to 600 grams/m²
Flowering time up to 49 days
Growersprofile Moderate