The Best Strains for Greenhouse to Get the Most Out of Your Grow

There's nothing quite like waking up in the morning to a greenhouse full of cannabis.

You're in the right place if you want to learn how to capture that feeling for yourself.

Today, we are talking about the five best strains for greenhouse growing.

If you’ve never grown in a greenhouse before, you’ll love these strains because:

They make growing easier, and can deliver some SERIOUS yields.

These strains combine potency, great genetics, complex flavors/aromas, and can easily grow to their fullest potential when grown in a greenhouse.


Quick Top 5 Greenhouse Strains:

Keep reading or jump straight to the reviews!

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Advantages to Growing Cannabis In a Greenhouse 

While setting up a greenhouse takes a little more work than simply sticking a seed in the ground, there's a world of advantages that come with a properly set up greenhouse.

→ Controlled Environment 

The biggest advantage to growing in a greenhouse is the control it gives you over your outdoor growing environment.

Plus, for many growers, the more control they have, the bigger their yields

Even when your climate is perfect, a massive rainstorm with high winds or random heat wave can always strike.

A greenhouse gives you protection against these random acts of God. 

Now, a greenhouse won’t give you as much control as growing indoors does, but putting together a greenhouse is almost always cheaper than an indoor setup. 

With a greenhouse, you can still rely on your climate to help fulfill your plants’ needs like light, temperature and humidity.

With an indoor grow setup, you have to recreate all of that, and this costs money and takes more time to put together. 

You can save hundreds of dollars on a grow light alone.  

To see the lights that will save you the most money, check out this guide.

→ Helps Keep Insects and Mildew Away 

A greenhouse can greatly cut down insects access to your plants, but be aware that they can still get into the enclosure. 

As well, you’ll want to keep a hygrometer in your greenhouse.

High temperatures and humidity can really build up, which is bad for flowering plants.  

However, many outdoor growers struggle to adequately provide the high temperatures and humidity levels that young plants love. 

Using your greenhouse to give young plants their optimal temp/humidity is a great way to get a massive head start that turns into an equally massive yield. 

Grow cannabis the right way. Click here to see the best seeds.

→ Great for Climates That Are Hard to Grow In

If you’re not living in either a Mediterranean or Equatorial climate, it’s likely that where you live isn’t perfect for growing cannabis.

You want the biggest yields you can get out of your space, right?

Well, then the first thing you need to do is learn how to provide your plants with the perfect environment.

If you happened to be an indoor grower reading this, and are interested in supplementing CO2, you really want to follow and master the above advice before introducing it.  

→ You Can Choose Pickier Strains 

We’ve just looked at three advantages a greenhouse can give you, and the final advantage directly relates to them. 

When you can control more of your environment, keep pests away, and provide optimal conditions, you can grow pretty much any strain your heart desires. 

There are a lot of great strains out there that are picky about their environment in one way or another. 

There is a good reason why you’ll find article after article about the best strains to grow indoors because well, let’s put it bluntly, some strains suck when left to the whims of an outdoor climate.

A greenhouse is fantastic for growing cannabis strains better suited for growing indoors. 

The Best Strains for Greenhouse Growers

While a greenhouse is a perfect way to grow strains that are typically reserved for indoors, we wanted to give you five strains where a greenhouse gives you the best setup for growing them. 


Late October 

Sativa / Indica 

40% / 60%




21 oz/plant   



THC / CBD Ratio 

Medium-High / Medium 

Many growers consider White Widow a quality over quantity strain, but when grown under perfect conditions, it's one of the best strains for greenhouse grows.

White Widow has gotten a bad rap for lower yields.

But it's still a popular strain to pick when you’re climate isn't ideal for cannabis. 

And while WW grows well in a lot of different climates, if you want to see truly big yields from it, you want to provide it with a Mediterranean climate

With optimal conditions, White Widow can become the star of your garden.

And once you smoke it, you’ll see what all the hubbub is about and why it’s been called one of the best strains for decades. 

White Widow has a smooth aroma and flavor with some varieties displaying spicy and sweet notes. 

The high is simply delightful and is perfect for sparking the artist's mind with creativity and euphoria when they’re stuck with writer's block.


Late October 

Sativa / Indica 

65% / 35%




25 oz/plant  



THC / CBD Ratio 

Medium-High / Low 

If you want a strain that you can enjoy smoking for months on end, make it Trainwreck. 

Trainwreck has a very versatile, but always balanced high with its significant alpha-pinene terpene content, and ability to blend both indica and sativa effects.  

Because of its balanced cannabinoid ratio and comforting body effects, Trainwreck is popular with medical users who want a strain good for pain, migraines, cancer and epilepsy. 

As well, recreational users will love its euphoric and stimulating high that’s great for getting things done, but watch out because it can couch-lock you if you let it. 

Trainwreck is often grown indoors because it has a long flowering time, but as long as you set up your greenhouse to handle colder temperatures, you’ll have a sturdy plant that does very well outside.


Late September 

Sativa / Indica 

20% / 80%




17 oz/plant   


Dry / Tempered 

THC / CBD Ratio 

Medium-High / High 

Critical Mass is a joy to grow, and the dense nugs you’ll reap during harvest will have all your friends wanting a piece of the bag. 

There is one small problem with Critical Mass that forces it indoors a lot, and that’s the nugs getting a little too dense and its high leaf to flower ratio.

This makes this strain great at trapping in moisture. 

Frequent rainfalls and just too much moisture, in general, gives mold and mildew the perfect breeding ground for eating your plants from the inside out. 

Growing Critical Mass in a well-ventilated greenhouse is the perfect solution to avoid this issue, and you’ll likely see this fast flowery outshine indoor grows. 

Critical Mass has a sweet woody flavor and is packed with CBD making it great for conditions such as depression, insomnia, pain, PTSD and stress.


Late September-Early October 

Sativa / Indica 

60% / 40% 




18 oz/plant   



THC / CBD Ratio 

Medium / Medium 

Often called a harder to grow strain, Jack Herer has been one of the most popular marijuana strains since the ’80s, and its balance day-time high, spicy herbal odor, and smooth smoke is simply put, magnificent.  

In actuality, Jack Herer is not difficult to grow as long as you can provide it with one thing, and that's room to grow.  

It takes around ten weeks for this sativa-dominant strain to flower, and in the time it can grow to heights that would make it perfect for playing cannabis NBA.

Its tallness makes it a pain to grow indoors because it can reach heights between 6-8 feet. 

This makes it a perfect strain to grow in an average-size greenhouse that can meet its Meditteranean climate demands and handle all that height.



Sativa / Indica 

50% / 50%




16 oz/plant  



THC / CBD Ratio 

High / Low 

Gorilla Glue is a fast flowering sativa that puts on a lot of height fast when given optimal conditions, and this often takes indoor users by surprise forcing them to do a lot of plant training.

But all of that makes GG perfect for growing in a greenhouse.

Make sure you can give this plant up to 6-7 feet of growing space, or you'll be sharing the indoor growers frustration.

Gorilla Glue is a high yielder, and while not highest in flower content, it does have the highest THC levels on our list with some growers hitting 30% THC with it. 

This strain’s name gives away to the high, and you can expect to become best friends with your couch where you’ll be spending all your time. 

The flavor and aroma are fairly similar to each other and deliver a nice balance between pine and moss after a heavy rainstorm with hints of coffee and chocolate popping up in some varieties. 

The only times you need to watch GG when cultivating outside are during heavy rain and frost, but that’s why you have your greenhouse. 


Growing cannabis outside can hinder your choice of strains when your climate isn't perfect for growing in some aspect.

Fortunately, a greenhouse can solve those issues allowing you to grow pretty much any strain you want, even those that are recommended for indoor grows only. 

The hardest part of putting together a greenhouse is knowing how complex you need to make it.

If you aren't unsure of where to buy seeds from, click here to see our favorite store.

If you're new to growing in one, we recommend one of the strains above.

They're pretty easy strains to grow and you'll have one less thing to worry about. 

Think we left any of the best strains for greenhouse growers that we left off the list?

Let us know in the comments!

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