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best greenhouse marijuana seeds

Top 5 Feminized Greenhouse Seeds

The Greenhouse Seed Company is certainly one of the most renowned businesses in the cannabis seed market, and responsible, for creating some of the best-performing cannabis strains the world has ever seen. Their cannabis strains won 40 High Times Cannabis Cups, 17 Highlife Cups, and many other international awards over the years clearly indicating that their seeds rank among the best. This company has continuously extended their activities by developing a feeding line, producing documentaries about the hunt for landrace strains, or launching GrowHD.tv, a video platform made for growers. Several coffeshops in Amsterdam complete their range of services and allow customers from all across the globe to taste the strains they created. Arjan, the founder of Greenhouse Seeds, started to collect genetics from landrace strains more than 25 years ago resulting in an extensive genetic database. Outstanding strains like Great White Shark, Super Silver Haze or Himalaya Gold are just a few examples of first-rate cannabis varieties that propagated out of their R+D department in Amsterdam. If you’re curious about what strains other customers of Zativo purchase, then take a look at our Top 5 ranking of the best-selling feminized strains by Greenhouse Seeds.

1. Super Critical (Greenhouse Seeds)

  • Indica-dominant
  • Big Bud x Skunk x White Widow
  • 8 weeks

Super Critical is an undefeatable champion when it comes to sales here at Zativo. It’s an indica-dominant crossing of Big Bud, Skunk, and White Widow well known for producing excessive yields and a deeply relaxing, almost narcotic, body stone. Greenhouse Seeds crossed Super Bud, a fusion of Big Bud and Skunk No.1, with White Widow, which resulted in a highly stable strain that can also be grown by novices. Indoor yields of up to 800g/m² is the maximum production potential growers can reach in 8 weeks of flowering. Super Critical is a high-efficiency strain that helps growers to achieve a gram-per-watt ratio they never thought would be possible. High yields are feasible by growing this strain in either a SoG or a ScrOG, depending on personal preference. Super Critical grows medium-tall, has the tendency to develop lots of strong branches, and can reach a critical mass of 1200g per plant when grown outdoors, assuming ideal conditions. If one strain deserves its popularity than its Super Critical by Greenhouse Seeds, not only for generously filling one curing glass after another but also for providing fast-hitting and physical effects of the strongest kind.

2. Ladyburn 1974 (Greenhouse Seeds)

  • Indica/Sativa
  • Jack Herer x Ice Dream
  • 9 weeks

Ladyburn 1974 is an indica-dominant crossing of Jack Herer and Ice Dream. It’s not overly surprising to see another strain with Jack Herer genetics in our Top 5 ranking of feminized strains by Greenhouse Seeds. The influence of Ice Dream intensifies the body stone that can be felt almost instantly after taking the first hits and is followed by a long-lasting high that fades away slowly. Ladyburn 1974 has a flowering period of 9 weeks and can produce indoor yields of up to 800g/m² in ideal conditions. This variety is perfectly suitable to be grown in a ScrOG and preserves a lot of Sativa characteristics inherited from Jack Herer. The genetic makeup consists of 60% Indica and 40% Sativa genetics, giving Ladyburn 1974 the suitability to be grown by beginners or experts alike. Heavy outdoor yields of up to 1000g per plant are ready for harvest in early October, and lab results showed THC levels of 21.8%. Ladyburn 1974 is a great strain to grow and understandingly a popular choice among Zativo’s customers – the level of frostiness in late flowering is ridiculous and amazingly beautiful at the same time.

3. Super Lemon Haze (Greenhouse Seeds)

  • 70% sativa – 30% indica
  • Lemon Skunk x Super Silver Haze
  • 10 weeks

Super Lemon Haze won tweemaal op rij de eerste plaats in de High Times Cannabis Cup. Deze Haze hybride won haar eerste HTCC in 2008 en wederom in 2009 en dat is iets dat niet veel andere soorten hebben gepresteerd, op Super Silver Haze na, toevallig een van de basisplanten van Super Lemon Haze. Het is niet onredelijk aan te nemen dat SSH deels verantwoordelijk is voor het succes van Super Lemon Haze op deze evenementen en ook voor de populariteit onder Zativo’s klanten. Super Silver Haze won drie opeenvolgende High Times Cannabis Cups op rij, maar dan wel tien jaar eerder, namelijk in 1997, 1998 en 1999. Greenhouse Seeds besloot Super Silver Haze te kruisen met Lemon Skunk, een hybride van Las Vegas Lemon Skunk en een niet bekend gemaakte Dutch Skunk variant. Lemon Skunk won ook twee belangrijke prijzen, namelijk de HighLife Cup in 2007 en de Spannabis Champions Cup in 2008. Opgeteld hebben de genen van Super Lemon Haze en de basisplanten maar liefst zeven eerste plaats overwinningen behaald! Rokers kunnen een krachtige high verwachten, goed gebalanceerd tussen lichamelijk en cerebraal en een verse mix van citroensmaken, gemend met die uitgesproken Haze smaak. Super Lemon Haze heeft een bloeiperiode van 10 weken, reageert goed op LST en de ScrOG methode en produceert tot 800g/m² in ideale omstandigheden. Onafhankelijke laboratoriumresultaten hebben torenhoge THC niveaus laten zien van maar liefst 25%!

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4. Super Silver Haze (Greenhouse Seeds)

  • 70% sativa – 30% indica
  • Skunk x Northern Lights x Haze
  • 10-11 weeks

Super Silver Haze already helped Super Lemon Haze to climb almost all the way to the top of our sales ranking. It’s a true breeding miracle created by Shantibaba and Neville Schoenmakers while they were still working with Greenhouse Seeds back in the 1990’s. It remains one of the best sativa-dominant strains ever released and is still available in many Dutch coffeeshops today. There’s not a single strain that ever managed to win three High Times Cannabis Cups in a row expect for Super Silver Haze – epic-winning at the HTCC 1997,1998, and 1999! The great thing about Super Silver Haze is that it offers an acceptable compromise between growing a classic Haze, stabilized with about 25% Skunk, and 25% Northern Lights. These strains brought a lot of vigour into this crossing, reduced the flowering time to 10-11 weeks, and managed to increase yields substantially. Super Silver Haze produces indoor yields of up to 800g/m² and outdoor harvests of up to 1500g per plant, assuming ideal conditions and a skillful cultivator. This strain does very well in a ScrOG where growers can take full advantage of the long and strong side branches. The high starts off with a fast-hitting, strong Sativa high in which smokers may experience a brightening of colours and sharpening of sounds, but this experience slowly shifts towards a physical stone as time progresses.

5. Jack Herer (Greenhouse Seeds)

  • 60% indica – 40% sativa
  • Haze x Red Skunk
  • 8 weeks

This exquisite cannabis strain was named after Jack Herer, cannabis activist and book author of the Emperor Wears No Clothes. Jack Herer, the strain, is another variety in our Top 5 sales ranking that won numerous awards over the years. It’s an ace up the sleeve of breeders or growers who aim for an exceptionally strong combination of cerebral, long-lasting Sativa effects and a physical stone. Zativo’s customers seem to admire these hybrid effects, which are uplifting for the mind while at the same time, promote deep relaxation throughout the entire body. The genetics of Jack Herer are usually well balanced between Sativa and Indica (50/50) and most phenotypes lean towards their Sativa heritage. Jack Herer by Greenhouse Seeds, however, is slightly indica-dominant with 60%. Indoor yields of up to 800g/m² are feasible in ideal conditions. The flowering time is completed in just 8 weeks, resulting in fat calyxes and a thick layer of frosty trichomes covering heavily swollen buds. Zativo’s customers purchase this strain over and over again helping it to rank 3rd place among our Top 5 best-selling feminized strains by Greenhouse Seeds – it’s a gourmet strain and the non-alcoholic equivalent to champagne.

What are the best strains to grow
in a Greenhouse?

Growing in a greenhouse comes with numerous benefits, including the ability to work under a more controlled atmosphere than in the wide-open outdoors.

In this article, what is the best strain to grow in a greenhouse, we will teach you:

  • How to prepare your greenhouse
  • The necessities to obtain the best possible results
  • Important information on legalities before you start
  • 4 top strains we reviewed to be highly suitable for this purpose

So without further ado, let’s get started!

Quick Overview:

AK 47

  • Well-balanced hybrid
  • High THC level
  • Prone to budrot

WINNER!

Our Rating:

Cheese

  • Autoflowering
  • Easy to grow
  • Funky smell
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Our Rating:

Critical Blue

  • High CBD content
  • Nice fruity flavor
  • Severe munchies
Our Rating:

Northern Lights

  • High THC
  • Resinous beautiful buds
  • CBD content unknown
Our Rating:

AK 47

  • Well-balanced hybrid
  • High THC level
  • Prone to budrot

WINNER!

Our Rating:

Cheese

  • Autoflowering
  • Easy to grow
  • Funky smell
Our Rating:

Critical Blue

  • High CBD content
  • Nice fruity flavor
  • Severe munchies
Our Rating:

Northern Lights

  • High THC
  • Resinous beautiful buds
  • CBD content unknown
Our Rating:
  • The indoor-outdoor growing debate
  • Attributes of our best greenhouse strains
  • Precautions for a legal grow
  • The best strains to grow in a greenhouse
  • Ak 47 feminized
  • Cheese autoflower
  • Critical blue feminized
  • Northern lights feminized
  • Turn your greenhouse green already

The Indoor-Outdoor Growing Debate

There’s an ongoing debate in the cannabis world about whether it’s best to grow indoors or outdoors.

Growing Cannabis Indoors

  • Control: Indoor growing provides the highest level of control — you can closely monitor factors such as lighting, heat, and CO2 and adjust them as you see fit. This, unfortunately, means that production costs are significant.
  • Pests: So is the chance of pests. The bug factor can be highly problematic and may require the use of insecticides, adding to the costs of indoor production.
  • Mold and mildew: Additionally, mold and mildew are more common than they are outside due to the need for tight water and ventilation measurements.

Growing Cannabis Outdoors

  • Sunlight: The main advantage of growing outdoors is access to sunlight, providing natural energy for growth (source).
  • Labor costs: Labor costs are lower as nature does the growing; there’s less need for human intervention.
  • Pests in check: Another positive point is that most pest difficulties are usually kept in check naturally.
  • Difficult weather conditions: A primary downfall here is when you’re trying to grow cannabis in less-than-ideal environments; long, harsh winters, for example. Outdoor growth may be hard to come by in such conditions.
  • Vulnerable to theft: You’re also vulnerable to larger animals or even human thieves snatching your precious buds. This can be a travesty, not to mention the resources and time lost.

Greenhouse Growing as Middle Ground

As you can see, indoor and outdoor environments both have their pros and cons. Growing in a greenhouse may offer a balanced solution to this debate.

In such a scenario, you’re taking the best elements of outdoor growing and pairing it with protection from the not-so-great ones.

Like growing outside, you have the wonderful advantage of sunlight. Factors such as temperature and humidity will play a role, of course, but you can monitor and control these, just like indoors.

For those that live in cold and unpredictable climates, greenhouses may be an even more attractive solution.

Are you looking for reliable results and to benefit from both indoor and outdoor conditions? You may find your sweet spot in a greenhouse.

Attributes of Our Best Greenhouse Strains

Our 4 best strains to grow in a greenhouse share some similar characteristics across the board. These include:

1. 8 to 10-Week Flowering Time

This is the time it takes for a plant to produce flowers or buds. While growers can manipulate this process, influencing the season in which they finish, most flower around September.

Our best strains to grow in a greenhouse flower between 8 and 10 weeks. After this period, the harvest is right around the corner, where you’ll enjoy the fruits of your labor.

2. Yield of 400 to 600 Grams/m2

We’ve taken the average yield of our 4 best strains to provide you an approximation of what you’ll receive once flowering is said and done.

Indoor strains tend to yield a smaller amount, while outdoors will provide larger plants in general. In greenhouses, you’re most likely to see a range somewhere between 400 to 600 g/m2. The yield isn’t minimal, but not the maximum either.

3. Hybrids Unite

All the strains on our list constitute hybrids. In most scenarios, we find that hybrids offer the best of both worlds.

This means you can receive the positive benefits that Sativa and Indica plants have to offer. Where the former is associated with uplifting, energizing effects, the latter tends to provide a more sedative, relaxing experience (source).

Our best strains for greenhouse growing are mixed — some are more Indica-dominant while others have a heavier Sativa percentage. This way, you get to choose according to your needs and desires.

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4. Easy-To-Moderate Difficulty

When it comes to growing cannabis, we at Marijuana Seed Breeders classify our seeds into three levels of difficulty — easy, moderate, and hard.

Our 4 best strains for growing in a greenhouse all come up on the easy-to-moderate side of things. This indicates some are suitable for beginner growers while others may require a bit more background knowledge for successful growth.

Precautions for a Legal Grow

To set up a grow house that’ll last, you want to ensure you’re taking the appropriate legal measures. By doing this, you’ll avoid problems down the road (like the po-po!). We can’t responsibly advocate for growing otherwise.

Many US states are realizing the positive potential of legalizing cannabis use, from treating medical conditions to increased tax revenue for the economy. Some states have legalized cannabis for medical use only, including Oklahoma. Other states for medicinal and recreational, such as California.

Your location makes a difference as laws vary from state to state, and it’s crucial you learn the stipulations accordingly.

● How you grow, including the quantity.

● If you can sell the cannabis, and how this is possible.

Do your research and make sure you’re covered.

One resource to check out is the Drug Policy Alliance. The organization campaigns for a change in the mindset and policies around drug use. It educates and also shares new bills and laws around the topic.

The Best Strains to Grow in a Greenhouse

As we’ve seen, growing in a greenhouse may offer you the best of both the indoor and outdoor worlds. Our favorite 4 picks for doing so are:

AK 47 Feminized review

The result of AK 47 is what places this strain at the top of our list. It’s as balanced as one can get with 45 percent Indica and 55 percent Sativa. The name makes it sound much harsher than it actually is and the strain provides a gentle yet euphoric high.

It has a curious profile combination, thanks to four varieties from different places — Mexico, Thailand, Colombia, and Afghanistan.

There’s a citrusy and somewhat diesel flavor while the smell is more floral and earthy. The buds look quite snowy and even somewhat mysterious.

Since it’s a balanced hybrid, you receive both the head and body high here. It may lessen anxiety and stress, help nausea, insomnia, and more. A 22 percent THC level and 0 percent CBD lends itself to a potent high.

When it comes to growing AK 47, it comes in at a moderate level of difficulty. The plants themselves are quite compact and have a lot of branches. If you live in a humid climate or experience rainy weather regularly, watch out for mold, which can cause bud rot.

Prone to rot with too much wetness

Cheese AutoFlower review

It’s popular enough to be sold at coffee shops across Amsterdam and has even won awards at the High Times Cannabis Cup. On top of that, it’s one of the easiest to grow, and all because it flowers automatically.

Autoflowering strains are especially suitable for inexperienced cultivators. You can harvest them twice a year, and they usually remain small but fat, so they are easy to conceal. Furthermore, they require far less maintenance than your regular or feminized seeds. And, on top of that, most auto-flowering varieties have surprisingly high resilience to mold, vermin, and other unpleasantries that may pose a threat to your growth.

All of this combined makes this strain a convenient, reliable option. It takes around nine weeks to flower, and you’ll receive resilient, compact buds in return.

Yes, it does have a cheesy taste and odor, paired with flowers and a bit of that well-known skunk smell. It could turn some off, and others take to it kindly.

At 20 percent Indica and 60 percent Sativa, it’s a mild body high and moderate head high — nothing that will blow you to shreds but gets the job done, nonetheless. The THC content comes in at 20 percent as well, promising a nice, psychoactive experience.

Pain perception and a lack of appetite may be remedied here as you enjoy a soothing, relaxing effect overall.