11 Best Strains to Grow in a Greenhouse – Top Reviewed Products For 2022

While the concept of greenhouse has gained massive popularity over time, we can’t deny the fact that growing plants in a greenhouse or grow room is no joke. Not only do you need to be vigilant about the factors involved in ensuring proper growth, but you also need to take care of the climate and temperature settings.

Growing strains in a greenhouse are extremely unpredictable and can also make it difficult for you to match them from time to time. Not just with ventilation, you also need to be mindful of the risks of diseases and cross-pollination like it happens in many cases. 

From the quality of the seeds from the best seed banks to finding viable options for growing the different marijuana strains, you need to be mindful of several factors. However, like the challenges, growing marijuana strains in a greenhouse also reduces the risks of damage to the plants which can happen when you are growing them outdoors.

In this article, we will be highlighting some of the best strains that you can grow in the greenhouse without any complications.

11 Best Strains to Grow in Greenhouse in 2022

ILGM and Crop King Seeds are two of the most popular seed banks that you can find quality marijuana seeds from. Not just feminized, regular but even auto-flowering seeds, you can find a lot more than you’d generally expect.

To make your search easier, we have sorted out all the best choices for you:

1. Gelato Seeds Feminized

• 55% Indica and 45% Sativa
• THC levels – 20%
• Flowering – 10 weeks

Although we are starting off the list with the Gelato Seeds Feminized, we can’t stress the fact that it’s one of the most underrated strains in the market. Growing this strain in the greenhouse can not only be challenging but can get damaged completely too.

Since they are feminized seeds, you won’t have a hard time witnessing a quicker flowering with harvest without any delays. However, since it is an intermediate and advanced level grower, you do need to manipulate the light cycles.

They are typically grown indoors and in humid climates. So, when growing them in a greenhouse, you need to ensure that you install a humidifier inside to maintain the optimal range for uninterrupted growth of the strain.

This is a quick flowering strain, which means that you won’t have to wait for a longer period because it can be harvested within 9 weeks after planting the seeds. The individual plants grow up to 16 ounces of yield, which is quite high.

2. Cheese Seeds Feminized

• 60% Indica and 40% Sativa
• THC levels – 14%
• Flowering – 10 weeks

Just like the name suggests, the Cheese Seeds Feminized is one of the few strains in the market that has higher potency in leaving you feeling relaxed and calm after a heavy day at work. It does have a blend of cheesy, earthy, pineapple, and pungent smell and flavor to it.

If you aren’t fond of extremely pungent flavors, you might want to steer clear of this strain. The feminized seeds ensure quicker harvesting with optimal flowering without any hassle. The strain is often a result of a crossbreed with Afghani Indica and hence the characteristic flavors.

This is an extremely easy strain to grow, especially if you are a complete amateur with marijuana and don’t have a lot of knowledge and understanding of growing them. The versatile seeds can grow without any hassle, making them a favorable option for you.

The strain also has a fast-flowering aspect to it and can be harvested within 10 weeks, which is always a benefit. Also, it is a high-yielding strain that produces up to 14 ounces of usable marijuana without any hassle.

3. LSD Seeds Feminized

• 55% Indica and 45% Sativa
• THC levels – 24%
• Flowering – 8 weeks

Like the name of this strain suggests, LSD Seeds Feminized inhibits similar effects as LSD would. However, the impacts aren’t as drastic or impactful on your health. It ideally grows well in greenhouses, because of the compact and shorter plant growth.

Besides the psychedelic euphoria, the strain does have a blend of citrus, earthy and sweet flavors that you will enjoy. It is also one of the few strains that contain a high THC level that induces a full-body high for a prolonged period.

Also, the seeds are feminized, which means that you won’t have to face issues with harvesting and yields from it. If you are growing them indoors in a grow room or greenhouse, be assured that it needs prolonged light exposure.

As for the flowering, it happens between 9-10 weeks after planting the seeds. Also, a single harvest can yield up to 21 ounces of usable cannabis, which is one of the highest yields that you can get. So, if you want to experience a mental high for some creativity, this is it.

4. Crystal Seeds Feminized

• 60% Indica and 40% Sativa
• THC levels – 25%
• Flowering – 10 weeks

Moving ahead to another option in the list of marijuana strains suitable for growing in the greenhouse is the Crystal Seeds Feminized. This is one of the strongest and most resilient strains that you can consider getting into growing.

The strain has a very neutral and earthy smell and flavor to it, which is often nice to smoke now and then without any drawbacks. The strain is a hybrid of Northern lights and White Widow. This strain is one of the most popular variants among novice growers.

Besides outdoor growing, this strain works equally well if you grow them indoors in a greenhouse. Just ensure that you maintain the optimal temperature with subtropical stretch to ensure optimal growth.

Use the Sea of Green method when growing them in a greenhouse. This ensures optimal growth. Also, it contains one of the highest THC %, which is another reason why it is such a popular strain.

5. Wedding Cake Autoflower Seeds

• 70% Indica and 30% Sativa
• THC levels – 17%
• Flowering – 10-14 weeks

Just like the name suggests, the Wedding Cake Autoflower Seeds has a very sweet and tangible flavor to it that everyone enjoys smoking for a quick pick me up. The mild THC levels ensure that you won’t have to worry about inflicting a prolonged high after smoking it.

The blend of vanilla, earthy, sweet, and undertones of citrus gives this a very unique flavor. Since this is an auto-flowering strain, you won’t have any issues with growing it in the greenhouse without any hassle in the process.

The only issue with growing this is that you need to be vigilant about the temperature. Any kind of steep rise will end up causing issues with inflicting damage to the growth of the plant in the long run. Also, the flowering and harvesting take a lot more than you’d anticipate, which is a bummer.

So, if you wish to chill out and relax without feeling extremely high to a point that you experience discomfort and headache, this is the strain you can grow in your greenhouse.

6. Black Widow Feminized

• 40% Indica and 60% Sativa
• THC levels – 25%
• Flowering – 8 weeks

If there is one strain that is considered the best to grow in a greenhouse, it is the Black Widow Feminized. This one is a public favorite and a bestselling strain from ILGM that you just can’t get enough of.

The strain has a blend of berry, earthy, and woody smell and flavor to it which feels amazing when you smoke it. It is not overwhelming and induces a lingering euphoric high without getting you stoned right from the get-go.

These are a feminized seed, which ensures that you won’t have to complain about flowering and harvest at all. Since the strain is extremely susceptible to rainfall and diseases, it is ideally grown indoors for optimal growth.

Also, the strain flowers within 8 weeks, making it easier for you to manage its growth without any complications round the corner. They can grow up to 6 feet, so, you need to invest in a larger grow tent or greenhouse tent.

7. Banana Kush Autoflower

• 60% Indica and 40% Sativa
• THC levels – 27%
• Flowering – 10-14 weeks

When talking about good-quality strains to grow in a greenhouse, the Banana Kush Autoflower deserves a spot in the top 10. Unlike most of the other strains, it is one of the easily accessible strains that enable you to make the most out of the situation.

The high THC levels make it easier for one to get stoned if you aren’t smoking the strain in moderation. Also, it does have a prolonged growing season, so you need to be on your foot round the clock taking care of the strain and protecting it from risks of diseases.

The reason why they are considered ideal for greenhouses is due to their compact size. The plants don’t grow very tall, which means that you won’t have any issues growing them as per your requirements.

Indoor or outdoor, this strain does grow pretty independently without needing much push. Besides the prolonged flowering period, you can expect quite a high level of yield, which is always a benefit.

8. Super Lemon Haze Autoflower

• 20% Indica and 80% Sativa
• THC levels – 22%
• Flowering – 10-12 weeks

Although the Super Lemon Haze Autoflower is quite an underrated marijuana strain, you can’t deny the fact that this one is one of the few choices that are not just easy to grow but induces a very calming effect in the smoker.

This is a Sativa-dominant strain that delivers the THC levels at 22%, which is considered pretty moderate. This means that you won’t have a lot of issues handling the hit of the smoke on the first go. As for the flavors, it has a blend of citrus, sweet and herbal.

Since this strain features auto-flowering seeds, you can grow this as a complete novice without any hassle. Also, the feminized seeds ensure assured yields, so your efforts won’t go to waste. Just ensure that you stay vigilant with the flowering cycle.

The seeds do best in warmer climates, so if you are growing them in greenhouses, you need to mimic the warmer temperatures indoors. The package itself should come with all the germination instructions you need to know.

9. Maui Wowie Feminized

• 20% Indica and 80% Sativa
• THC levels – 20%
• Flowering – 8 weeks

Last from ILGM is the Maui Wowie Feminized. This is one of the most underrated marijuana strains that you’d generally come across. However, the main reason behind this is because it grows well in greenhouses and grow rooms.

The strain has a typical pineapple flavor to it, which is characteristic of it and is felt the moment you smoke it in. If you want a quick boost of energy without a lingering high and heaviness, this is the best strain for it.

Despite having strong genetics, the Maui Wowie Feminized is very easy to grow. It has a quick flowering period, which further ensures quicker harvest and moderate yields. Just ensure that you supply a cold and gentle breeze temperature when growing them indoors.

As for the effect, it does inflict therapeutic benefits and helps you feel relaxed in the moment. However, since the THC levels are moderately high, it can hit you in one go and leave you with a heavy feeling and dizziness.

10. Blue Dream Feminized Marijuana Seeds

• 60% Sativa and 40% Indica
• THC levels – 19%
• Flowering – 9 weeks

The Blue Dream Feminized Marijuana Seeds is a leading bestseller from Crop King Seeds that is also ideal for growing in the greenhouse. The strain has a very pleasant smell and flavor with hints of sweetness that you are going to enjoy smoking.

It has a range of therapeutic benefits, including helping with both physical and mental ailments. If you want to reduce the impacts of headaches, discomfort, and pain, this is the strain to opt for. However, since the THC levels are quite moderate, we’d recommend that you don’t smoke a lot in one go. 

The plants typically grow up to 150cm, which is slightly taller than the Indica variants. However, that doesn’t stop it from being a good growing option in the greenhouse. Also, if you are growing it in hydroponics, ensure to follow the SOG method.

Although it is a lot easier to grow, we’d recommend that you do get help from an experienced grower before turning a complete blind eye to the germination process.

11. Gorilla Glue Regular Marijuana Seeds

• Indica dominant strain
• THC levels – 18%
• Flowering – 9 weeks

If there is one common strain to grow in a greenhouse, the Gorilla Glue Regular Marijuana Seeds have to be on the top of the list. Besides being an easy strain to grow, it is also one of the few strains that don’t involve a lot of rough smell and flavor to it.

The mild lingering feeling after smoking is quite pleasant and not overpowering as most of the other strains would. Also, it is a blend of three-parent strains, including Sour Dubb, Chocolate Diesel, and Chem’s Sister.

In case you want to have a relaxing time with some friends or family, this is a good strain to start a conversation over. It is a fairly easy strain to grow and doesn’t require a lot of attention, which is always a benefit.

Buyer’s Guide to the Best Strains for Growing Cannabis in a Greenhouse

While it is common knowledge that there are two ways of growing weed – indoors and outdoors, a lot of people prefer the hybrid way, by using greenhouses. This is neither a totally indoor nor a totally outdoor method of growth. This is why there are some special things that need to be taken care of before you choose the best strains to grow in a greenhouse. Here’s a look at a quick checklist that you can use as a buyer’s guide before you decide on the strain that you are going to buy for your greenhouse:

1. Indoor Strain vs Outdoor Strain

A greenhouse is a very unique setup given it is neither fully indoors nor fully outdoors. This is why you need to know the genetic makeup of the strain and understand what kind of growth suits it the best. If this is a strain that is more suited for outdoor growth, you might want to provide it a higher access to natural light and a more ventilated sort of a setup in the greenhouse. However, if this is a strain which is more of an indoor variat, you might want to provide it with more artificial lights and more of a recreated ventilation system than the normal one.

2. Heat and Humidity Requirements

When you’re growing your weed in a greenhouse it generally tends to have a different heat and humidity requirement when compared to what it would otherwise have. Make sure you’re reading up about the strain that you have chosen and are providing the right kind of environmental conditions. Some strains need more humidity during the vegetative phase and less during the blooming phase. 

In the case of some strains, this also applies to day and night patterns. Greenhouses are generally great for strains that prefer a little bit of warmth and humidity because they can trap the heat of the sun and sustain humidity levels better than a regular setup.

3. Know the Right Nutrition 

When growing plants in a greenhouse, it is also important to know the kind of nutrients they require. It is important to know when to start providing the nutrition, as well as when to stop providing the nutrients and to begin the process of ‘flushing’ the plant. Besides that, it is also important to know the nutrient split – in some phrases you need more Nitrogen and less of Potassium and Phosphorus, in other phases, the other two increase while Nitrogen levels need to be reduced. In addition to that, there are some ‘booster nutrients’ as well, which function only to ensure that the flowers grow bigger and faster and the overall yield of the plant increases. Draw up a nutrition chart and ensure that you are providing the right kind of nutrients to your plants.

4. Setting up the Greenhouse

The setting of the greenhouse is quite important too. Do you want to fit more plants or do you want to give lesser plants a larger space to grow? Do you want to use only natural lights or do you want to supplement natural lights along with LED grow lights? Do you want to set natural ventilation, or do you want to provide additional humidity inside your greenhouse? These are all the questions that need to be answered while setting up the greenhouse. Also, the size of the greenhouse will depend on the number of plants that you intend to grow inside it. 

5. THC/CBD Concentration

If you are growing your own weed inside your greenhouse, you need to know the THC/CBD concentration of your strains as well. Knowing these will help you determine the kind of effect that the plants will have on you once they have grown up and are ready to be consumed. 

Plants with a higher THC percentage generally tend to get you more ‘high’ and plants with a higher CBD percentage tend to have medicinal properties which help you fight pain and inflammations, as well as help lower stress and anxiety levels and have a number of other health benefits associated with them. Knowing these stats beforehand will give you a fair idea if you want to grow this strain or want to go for another strain which will give a different THC/CBD composition.

6. Taste and Flavor of the Strain

The taste and flavor of the strain that you are growing often tend to matter a lot. While there are some people who prefer the classic earthy taste and pungent smell, there are others who would prefer consuming a more taste or smell oriented approach. Buyers often choose the strains of their choice based on the smell and taste that they offer. Sometimes, you can buy seeds that result in plants which taste of berries and smell of fruits, at other times you can buy seeds which will give you a strong skunk-like smell. This is something you might want to consider while buying the strain of your choice. 

7. Cost and Quantity

Last but not least! Buying marijuana seeds can be a costly affair, and since there are thousands of options available out there, it is a good chance that you will be tempted to buy a lot of different variants. However, we recommend setting up a budget before you head out to buy your seeds so that you don’t end up overspending. Also, make sure you’re checking the yield per square foot that you will get from each of these strains when buying the seeds.

FAQs

1. Is greenhouse good for growing marijuana?

Yes, greenhouses and hydroponic settings are considered amazing for growing marijuana. Just ensure that you know the germination process and grow those following similar steps.

2. How many marijuana strains can we grow in a greenhouse at a time?

This depends on the strain you are growing. Typically, we’d recommend choosing strains that grow shorter without any issues because greenhouses come with limited space.

3. Do I need to buy lights and a fan for the greenhouse?

Typically, if your marijuana strain requires warmer temperatures, it is better to install grow lights. The same goes for the fan too.

Conclusion

Marijuana strains grow pretty well in greenhouses. So, if you are considering starting growing them in the grow rooms, the above are some of the best strains that you can consider looking into. We’d highly recommend that you focus on the process of growing without indulging in implementing your ways.