How Many Cannabis Plants Can I Grow Legally?

In this blog post, we’ll discuss how many cannabis plants you can grow legally in Canada and the United States

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In Canada, each household is allowed to grow up to four cannabis plants However, some provinces and territories have different or more restrictive limits.

Each plant you grow needs its own license. You can’t grow more than the limit set by your province or territory, even if you have more than one license.

If you want to grow more than the limit, you can apply for a Health Canada medical cannabis licence.

Federal and State Laws

The legality of growing cannabis plants for personal use varies widely from country to country. In the United States, for example, federal law prohibits the cultivation of cannabis plants for non-medical purposes, but individual states have passed their own laws regarding cannabis cultivation for personal use. As of 2019, 10 states and the District of Columbia have legalized cannabis for recreational use, while 33 states have legalized it for medical use.

There are no hard and fast rules when it comes to how many cannabis plants you can grow legally. Some states have limits on the number of plants you can grow per person, while others allow unlimited cultivation. It is important to check your state’s laws before growing any cannabis plants.

The Difference Between Indoor and Outdoor Cannabis Plants

Cannabis plants can be grown both indoors and outdoors, but there are some important differences to consider before deciding which is right for you. Outdoor plants are generally hardier and can withstand more extreme weather conditions, but they may not produce as much bud as their indoor counterparts. Indoor plants are typically smaller and more delicate, but they can be better controlled for things like temperature, humidity, and pests. Ultimately, the best growing method for you will depend on your climate, your space restrictions, and your personal preferences.

Outdoor Cannabis Plants:
-Can grow up to 20 feet tall
-Tend to be hardier and more resilient
-Require less attention than indoor plants
-May produce less bud than indoor plants

Indoor Cannabis Plants:
-Can be grown in smaller spaces
-Need to be sheltered from extreme weather conditions
-May require more attention than outdoor plants
-May produce more bud than outdoor plants

Plant Counts

The number of plants you can grow legally depends on several factors, including the state or country you live in, the purpose of your grow operation (recreational or medicinal), and whether you have a license to cultivate cannabis. In general, however, most jurisdictions allow individuals to grow a small number of plants for personal use.

For example, in the state of Colorado, adults 21 and over are allowed to grow up to six cannabis plants for personal use. If you have a medical marijuana card, you can grow up to twelve plants. And if you are part of a licensed cultivation facility, there is no limit to the number of plants you can grow. Similarly, in Canada, adults are allowed to grow up to four cannabis plants per household for personal use.

Of course, it is always important to check your local laws before growing any cannabis plants, as the regulations vary from place to place.

Plant Sizes

Cannabis plants come in a wide variety of sizes, from tiny “runt” plants barely bigger than your hand to massive behemoths that tower over you and produce several pounds of useable pot each. So, how many cannabis plants can you grow legally? Well, it depends on a few factors.

First, it depends on what country you’re growing in. Canada, for example, has different laws than the United States. In some states in the US, like California, there is no limit on how many plants you can grow. However, in other states, like Colorado, the limit is six plants per person.

Second, it depends on whether you’re growing for medical or recreational purposes. In some states, like California again, there is no limit on how many medical cannabis plants you can grow. However, in other states, like Colorado, the limit is twelve plants per person if you are growing for medical purposes.

Finally, it also depends on whether or not you have a license to grow cannabis commercially. If you do have such a license, then the limits are different again. For example, in Colorado the limit is ninety-six plants per person if you are growing commercially.

So as you can see, the answer to the question “how many cannabis plants can I grow legally?” is not as simple as it might initially seem. It really does depend on a number of factors.


Yields from cannabis plants can vary greatly depending on the grower’s personal methods and the strain being grown. A common perception is that Indica strains yield more than sativa strains, but this is not always the case. Yields also depend on the size and health of the plant, as well as environmental factors such as temperature, humidity, and pests. Generally, a well-grown cannabis plant can yield between 3 and 6 ounces (85 and 170 grams) of usable marijuana.


Cannabis plants need a lot of light, and the amount of light they need depends on the stage of growth they are in. Seedlings need about 16 hours of light per day, while vegetative plants need about 18 hours. Flowering plants need 12 hours of light per day.

If you are growing indoors, you will need to provide your plants with artificial light. This can be done with fluorescent lights, LED lights, or metal halide lights. Whichever type of light you choose, make sure it produces enough lumens to reach your plant’s needs.


Cannabis plants need fresh air to grow properly. Ventilation is important for two reasons: to remove excess heat and to provide the plants with fresh air. Good ventilation will also help to prevent mould and mildew from forming.

The size of your grow room will determine the amount of ventilation you need. A small grow room (up to 3’ x 3’) will only need a small fan, whereas a larger grow room (up to 10’ x 10’) will need a larger fan or multiple fans.

You should also consider the type of fan you need. An exhaust fan will remove heat and stale air from the grow room, while an intake fan will bring fresh air into the grow room. Both types of fans are important for a well-ventilated grow room.


Cannabis plants are annuals and will complete their life cycle in a single season, typically taking between 60 and 90 days from seed to harvest. In most cases, it is best to start growing early in the spring so that your plants have the longest possible growing season. However, cannabis is a very adaptable plant and can be grown successfully in a variety of climates.

The biggest factor that will affect your cannabis plants is temperature. Cannabis is a warm-weather plant and prefers temperatures between 70 and 85 degrees Fahrenheit. If the temperature drops below 55 degrees or rises above 95 degrees, your plants will likely suffer. In some cases, extreme temperatures can even kill your plants.

If you live in an area with extreme temperatures, you may need to take measures to protect your plants. For example, if you live in a hot desert climate, you might want to grow your plants in pots so that you can move them into shade when the temperatures get too high. Alternatively, if you live in a cold climate, you might want to grow your plants indoors where you can control the temperature more easily.


humidifiers, grow lights, and fans to keep the air circulating.

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