By Luke Sumpter


Greenhouses are a cannabis grower’s best friend. These trusty structures combine the high degree of control allotted by indoor growing with the sun exposure of the great outdoors. This allows growers to extend the growing season, which becomes especially helpful in colder climates. With the addition of a few lights, one can even raise plants all year round in regions with mild winters.

These glass or metal shells also protect cannabis plants from branch-snapping winds and mouldy flowers caused by excessive downpours. The microclimate they create also makes for more consistent buds, healthier plants, and bigger bounties. Finally, marijuana greenhouses make growing outside more stealthy, especially as they help to contain the obvious aroma and sight of the plants.

Most cannabis strains thrive in greenhouses. However, several are uniquely suited to this environment, really capitalising on the extended growing season and other benefits these structures provide. If you plan on filling your marijuana greenhouse anytime soon, you need to get to know these varieties.

1. Shining Silver Haze

Shining Silver Haze comes into her own within the confines of a greenhouse. This hard-hitting sativa packs a heavy punch with 21% THC. However, medium quantities of CBD offer a grounding effect. As the descendant of Haze, Skunk, and Northern Light, this cultivar imparts an energising cerebral high that will wake you up in the morning. When grown in a greenhouse, you can expect excellent yields of up to 650g/plant. However, she can grow up to 220cm tall, so you’ll either need a high roof or experience in training plants. Prepare to harvest your crop during late October.

10 Best Strains to Grow in a Greenhouse

Shining Silver Haze
23_genetic background_1 Haze x (Skunk x Northern Light)
33_Yield indoors_1 600 - 650 gr/m2
31_plant height outdoor_1 80 - 120 cm
25_flowering time_1 9 - 11 weeks
29_THC_1 THC: 21%
28_Type Blend_1 Sativa 75% Indica 25%
34_yield outdoor_1 600 - 650 gr/plant
32_plant height outdoors_1 180 - 220 cm
27_harvest period_1 Late October
22_Effect_1 Heavy

Buy Shining Silver Haze

2. Amnesia Haze

Just like the above, Amnesia Haze requires a long growing season, which makes her the perfect candidate for cultivating in a greenhouse. This superstar stems from Original Amnesia Haze and features a sativa-dominant genetic profile. Pair this trait with a THC level of 22%, and you’re in for a lively and motivating high. This tall strain produces long colas and peaks at a height of 210cm, although you can keep her at around 175cm using various training techniques. Expect a massive return of up to 700g/plant, ready to harvest in late October.

Amnesia Haze

Amnesia Haze
23_genetic background_1 Original Amnesia Haze
33_Yield indoors_1 600 - 650 gr/m2
31_plant height outdoor_1 80 - 140 cm
25_flowering time_1 10 - 11 weeks
29_THC_1 THC: 22%
28_Type Blend_1 Sativa 70% Indica 30%
34_yield outdoor_1 650 - 700 gr/plant
32_plant height outdoors_1 175 - 210 cm
27_harvest period_1 Late October
22_Effect_1 Long Lasting , Physically Relaxing, Powerful

Buy Amnesia Haze

3. Shogun

Shogun is one of the best strains to grow in a greenhouse, as she offers both a rewarding cultivation experience and a rewarding high. She goes to war, nobly, against negative emotions and low moods. This uplifting sativa wields a THC content of 25%, slashing away feelings of lethargy and leaving you ready to tackle the day ahead. Her gorgeous flowers also add some serious colour to your greenhouse, including shades of dark green and hints of purple. With a peak height of 190cm, some growers might find themselves in need of a box to defoliate the upper canopy. This strain relies on long summers to grow, making greenhouses a must for cultivators further north. Be prepared to harvest, dry, and cure 650–750g/plant.

Shogun

Shogun
23_genetic background_1 Amnesia Haze x Gorilla Glue 4
33_Yield indoors_1 550 - 600 gr/m2
31_plant height outdoor_1 90 – 140 cm
25_flowering time_1 9 - 11 weeks
29_THC_1 THC: 25%
28_Type Blend_1 Sativa 70% Indica 30%
34_yield outdoor_1 650 - 750 gr/plant
32_plant height outdoors_1 150 - 190 cm
27_harvest period_1 Late October
22_Effect_1 Calming, Clear, Laughter, Uplifting

Buy Shogun

4. Mimosa

Talk about delicious; Mimosa packs moreish tastes of citrus and earth that will leave you awake and refreshed. Sure, she makes for a great smoke, but vaping these flowers enables her terpenes to really come to the fore. Although sativa dominant in nature, this strain peaks at a height of 100cm, making her an ideal choice for those with small greenhouses. But don’t let her size fool you, yields of 550g/plant are no joke. Following harvest and processing, you’ll enjoy thick colas packed with 23% THC.

Mimosa
23_genetic background_1 Clementine x Purple Punch
33_Yield indoors_1 350 - 400 gr/m2
31_plant height outdoor_1 60 - 80 cm
25_flowering time_1 9 - 10 weeks
29_THC_1 THC: 22%
28_Type Blend_1 Sativa 70% Indica 30%
34_yield outdoor_1 500 - 550 gr/plant
32_plant height outdoors_1 80 - 100 cm
27_harvest period_1 Middle of October
22_Effect_1 Creative, Laughter

Buy Mimosa

5. Chocolate Haze

Beware. This strain might cause some growers to mistake their greenhouse for Willy Wonka’s warehouse. The chocolatey, earthy, and fruity terpene profile of Chocolate Haze will take you to a different place. She tastes unlike anything else out there. However, you need to exercise patience to earn these buds. She yields up to 500g/plant, but won’t fully mature until late October. But after a good dry and cure, Chocolate Haze is all yours to experience. As her flavours begin to fade from your tongue, you’ll feel an intense sativa buzz begin to take hold.

Chocolate Haze

Chocolate Haze
23_genetic background_1 OG Chocolate Thai x Cannalope Haze
33_Yield indoors_1 475 - 525 gr/m2
31_plant height outdoor_1 90 - 160 cm
25_flowering time_1 9 - 11 weeks
29_THC_1 THC: 20%
28_Type Blend_1 Sativa 95% Indica 5%
34_yield outdoor_1 450 - 500 gr/plant
32_plant height outdoors_1 150 - 200 cm
27_harvest period_1 Late October
22_Effect_1 Heavy

Buy Chocolate Haze

6. Diesel Automatic

Grow Diesel Automatic in your autoflower greenhouse if you’re looking for something more subtle in effect. If you prefer to tickle your receptors with THC, as opposed to absolutely hammering them, then a content of 14% will fit the bill. Many growers reserve greenhouses for photoperiod sativas, but they work just as great with autos. Because they grow so quickly, you can achieve several harvests in a single season. You can expect to rake in up to 110g/plant in as little as 13 weeks. Terpenes bearing notes of fruit, citrus, and diesel will reward you for your effort.

Diesel Automatic

Diesel Auto
23_genetic background_1 Diesel x Ruderalis
33_Yield indoors_1 325 - 375 gr/m2
31_plant height outdoor_1 40 - 70 cm
25_flowering time_1 8 - 10 weeks
29_THC_1 THC: 14%
28_Type Blend_1 Sativa 40% Indica 30% Ruderalis 30%
34_yield outdoor_1 60 - 110 gr/plant
32_plant height outdoors_1 60 - 110 cm
27_harvest period_1 13 to 14 weeks after sprouting
22_Effect_1 Calming, Clear

Buy Diesel Auto

7. Royal Haze Automatic

Royal Haze Automatic is another auto that thrives in greenhouses. With a maximum height of 150cm, you can fit a good amount of plants into a medium-sized setup. Packing a THC content of 15% alongside medium levels of CBD and a host of earthy and herbal terps, her high is uplifting, inspiring, and never too much. This one has fuelled many a philosophical conversation. Plus, she doesn’t hang around in the greenhouse. Get ready to harvest 130–180g/plant just 12–13 weeks after germination.

Royal Haze Automatic

Royal Haze Auto
23_genetic background_1 Amnesia Haze x Skunk x Ruderalis
33_Yield indoors_1 300 - 350 gr/m2
31_plant height outdoor_1 65 - 85 cm
25_flowering time_1 8 - 9 weeks
29_THC_1 THC: 15%
28_Type Blend_1 Sativa 50% Indica 20% Ruderalis 30%
34_yield outdoor_1 130 - 180 gr/plant
32_plant height outdoors_1 120 - 150 cm
27_harvest period_1 12 - 13 after sprouting
22_Effect_1 Clear, Uplifting

Buy Royal Haze Auto

8. Royal Creamatic

Is this the tastiest auto on Earth? We’ll leave that for you to decide. But we can attest that these compact and sticky buds will barrage your taste buds with notes of citrus, sweetness, and earth for a delightful and cohesive sensory experience. What else would you expect from the progeny of Amnesia Haze and Skunk? Luckily, you don’t have to wait very long to experience all she has to offer. Once successfully germinated, Royal Creamatic will race to harvest in a matter of 12–13 weeks, yielding 165g/plant when grown in the comfort of a greenhouse.

Royal Creamatic

Royal Creamatic
23_genetic background_1 Cream Caramel x Ruderalis
33_Yield indoors_1 400 - 450 gr/m2
31_plant height outdoor_1 60 - 80 cm
25_flowering time_1 8 - 9 weeks
29_THC_1 THC: 15%
28_Type Blend_1 Sativa 10% Indica 60% Ruderalis 30%
34_yield outdoor_1 115 - 165 gr/plant
32_plant height outdoors_1 80 - 100 cm
27_harvest period_1 12 - 13 after sprouting
22_Effect_1 Calming, Physically Relaxing

Buy Royal Creamatic

9. North Thunderfuck Automatic

What a name, huh? You’d expect a strain with this title to offer something different. And she does. As the autoflowering version of North Thunderfuck, this powerful specimen puts out gorgeous, compact, trichome-laden flowers that will cause a ruckus at any gathering you attend. With a THC level of 21%, don’t get too drawn in by her looks—take things slow and steady. This strain thrives in greenhouse conditions, putting out an impressive 180g/plant and peaking at a relatively tall height of 150cm. Reach for your trimming scissors 10–12 weeks following germination.

North Thunderfuck Auto
23_genetic background_1 North Thunderfuck x Ruderalis
33_Yield indoors_1 500 - 550 gr/m2
31_plant height outdoor_1 90 – 140 cm
25_flowering time_1 8 - 9 weeks
29_THC_1 THC: 21%
28_Type Blend_1 Sativa 45%, Indica 50%, Ruderalis 5%
34_yield outdoor_1 90 - 140 gr/plant
32_plant height outdoors_1 120 - 150 cm
27_harvest period_1 10 - 12 weeks after sprouting
22_Effect_1 Physically Relaxing, Uplifting

Buy North Thunderfuck Auto

10. Triple G Automatic

The grand finale. Our breeders worked hard to coax this one into existence. By crossing Triple G with Big Skunk Auto, they created a variety boasting 20% THC alongside tastes of candy and chocolate. Like baking your own infused brownies? Then you just found a strain that will take your creations to another level. The cognitive effects of this strain will help you focus on intricate tasks, such as potting on more seedlings of the same variety! Get these seeds in your greenhouse and prepare to harvest 90–140g/plant around 11 weeks down the line.

Triple G Auto
23_genetic background_1 Triple G x Big Skunk Auto
33_Yield indoors_1 450 - 500 gr/m2
31_plant height outdoor_1 60 - 120 cm
25_flowering time_1 8 - 9 weeks
29_THC_1 THC: 20%
28_Type Blend_1 Sativa 15% Indica 80% Ruderalis 5%
34_yield outdoor_1 90 - 140 gr/plant
32_plant height outdoors_1 80 - 140 cm
27_harvest period_1 10 - 12 weeks after sprouting
22_Effect_1 Clear, Fast Thinking, Motivating

Buy Triple G Auto

Greenhouses: A Safe Haven for People and Plants Alike

Greenhouses aren’t just a great place to grow weed. They serve as a place of peace in an increasingly mad world, even when the weather is terrible. The strains above serve as the best companions when growing in these beloved structures. Take advantage of their ability to extend the growing season and harness the power of the sun as you embark on your next bout of soil care and soul care.

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