Categories
BLOG

growing pot in a greenhouse

A primer on growing marijuana in a greenhouse

Copy article link to clipboard.

Link copied to clipboard.

Contents

  1. Benefits of growing marijuana in a greenhouse
  2. Buying a cannabis greenhouse
  3. Growing marijuana in a greenhouse
  4. Should I grow weed in a greenhouse?

Cannabis cultivation can take place indoors, outdoors, or in a combination of these two venues: the greenhouse . A greenhouse, traditionally fashioned from glass, can be as small as a tool shed or as large as an industrial building. If you have enough space to accommodate even a small marijuana greenhouse, this option may propel your cultivation to the next level.

In this guide, you’ll learn why growing cannabis in a greenhouse can be effective as well as the first steps you’ll need to take to do it.

Benefits of growing marijuana in a greenhouse

The key word when it comes to cannabis growing in a greenhouse is control . A greenhouse provides the ideal meeting point of an indoor and outdoor climate while eliminating the unpredictability of the latter. Periods of rain and wind can wreak havoc on your weed garden, but a greenhouse protects plants from the elements. Likewise, pests, bacteria, and diseases are less likely to invade your plants in the shelter of a greenhouse.

The key word when it comes to cannabis growing in a greenhouse is control. Photo by: Gina Coleman/Weedmaps

Image lightbox

A marijuana greenhouse also puts you in control of two primary factors in a successful grow:

Lighting: A greenhouse gives cannabis plants the benefit of natural light without exposure to harmful environmental stressors. The sunshine also translates to savings in your pocket since you won’t have to worry about the electricity bill for all those LED lights.

Climate: In addition to protection from rain and wind, marijuana greenhouses can contain helpful tools like dehumidifiers, fans, air conditioners, and heating systems, none of which are possible for outdoor growers. With the help of these tools, greenhouses can weather all different seasons, making them an excellent choice for year-round cultivation.

What type of greenhouse is best for growing cannabis?

Whether you want to grow recreational weed or medical marijuana, the best greenhouse may be one that you build yourself. If you have the time and skills (or helpers) to construct your own greenhouse, this route will be the most cost-effective.

Building your own greenhouse requires an ideal location facing the sun. A slightly shaded area is fine, but make sure nothing is keeping the sun’s light from reaching your greenhouse. The more hours of direct sunlight, the bigger the yield.

Think about the storage space you’ll need for equipment such as supplemental lighting and nutritional blends. You’ll also need an easily accessible place to store water and soil, so that the greenhouse is a one-stop location for all your cannabis cultivation needs.

Consider which greenhouse material will create the ideal environment for your cannabis. While glass is the traditional material, you can also use fiberglass or plastic. The latter two will be equally effective but not as fragile or expensive. Whichever material you choose, make sure you install proper ventilation to let your plants breathe.

Before you start building a greenhouse, check local laws to see if building permits or other formalities are needed.

Buying a cannabis greenhouse

If DIY is not your style, then you should be able to purchase a top-quality greenhouse at a relatively low cost. Here are two popular design choices:

Polytunnel: These dome-shaped greenhouses have an aluminum base and a covering of polythene. Polytunnels are on the lower end of the price range, starting at around $200. These greenhouses are durable but do need some maintenance, especially replacement of the cover every five years or so.

Cold frames: Cold frames are another affordable choice. While it’s possible to construct a cold frame yourself, you can purchase a solid one for between $300 and $600, depending on the size. Cold frames are constructed out of wood or plastic and covered in clear plastic. This kind of greenhouse can be used as is, with only heat from the sun, especially if you live in a warm, dry climate like California. In a colder climate, consider installing a heating system, also known as a hotbed.

Neither of these choices should break a modest budget, but be prepared to maintain and/or replace parts as necessary.

Growing marijuana in a greenhouse

Once you have selected the type of greenhouse that works best for you, it’s time to put your gardening skills to the test. Here are the most important aspects of growing top-quality weed in a greenhouse.

Soil: First and foremost, invest in top-quality soil as this will impact the entire growing process. Pick a nutrient-packed soil that contains organic substances like compost and worm castings. Pay attention to the pH levels of the soil as well — aim for a range of 5.8 to 6.3. Other qualities to look for in soil include good drainage ability, high oxygen levels, and effective water retention.

Invest in top-quality soil as this will impact the entire growing process. Photo by: Gina Coleman/Weedmaps

Image lightbox

Equipment: From heating systems to oscillating fans, the supply list for a cannabis greenhouse can be long. But once you make an initial investment in equipment, most equipment will last season to season.

Knowledge: The most high-tech equipment won’t matter unless you have a thorough foundation in how to grow cannabis . This means understanding when seeds should be sown (generally April), when flowering occurs (8 to 12 weeks typically), and which cannabis strains do best in greenhouses (autoflowering strains such as Purple Punch Auto, Jack Herer , and 8-Ball Kush enjoy a great reputation among cannabis growers).

Should I grow weed in a greenhouse?

To answer this question, consider how much control you would like to have over your crops. If reliable conditions make growing cannabis a more enjoyable experience for you, then a greenhouse may be the way to go. Also, assess how much elbow grease you want to put into the growing process and if you want to build a structure from the ground up. Finally, evaluate your budget and grow goals before you make the decision to grow marijuana in a greenhouse. Whether you choose to grow weed outdoors, indoors, or in a greenhouse, raising plants from seed to harvest can be a rewarding experience.

A primer on growing marijuana in a greenhouse Copy article link to clipboard. Link copied to clipboard. Contents Benefits of growing marijuana in a greenhouse Buying a cannabis