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How to grow marijuana indoors: a beginner’s guide

Congratulations, you’re interested in growing your own cannabis plants for the first time! But before you flex that green thumb of yours, understand that growing marijuana indoors presents a unique set of challenges for the new hobbyist, and the sheer volume of information available on the subject can be overwhelming.

Our clear, easy-to-digest guide to indoor growing will help even first-time growers get started.

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Benefits of growing weed indoors

  • High-quality weed: Although it’s more resource-intensive than growing outdoors, you can control every aspect of your environment and what you put in your plant, so growing indoors will allow you to dial in your setup to grow some primo weed.
  • Adaptability: Live in an apartment or a small house? You can grow weed practically anywhere, even folks who don’t have a backyard or a lot of extra space.
  • Multiple harvests: Unlike outdoor growing, you aren’t tied to the sun and the seasons. You can let your plants get as big as you want, flip them into flower, harvest, and then start another batch right away. You can grow whenever you want, even straight through winter.
  • Privacy and security: Even in legal states, you may want to conceal your crop from judgmental neighbors and definitely from potential thieves. Growing indoors allows you to grow discreetly behind a locked door.

Step 1: Designate a cannabis grow room or space

The first step in setting up your personal cannabis grow is creating a suitable space in which to do it. This space doesn’t even need to be a typical room—it can be a closet, tent, cabinet, spare room, or a corner in an unfinished basement. Just keep in mind that you’ll need to tailor your equipment (and plants) to fit the space.

Start small…

When tackling your first grow project, you’ll want to start small for multiple reasons:

  • The smaller the grow, the less expensive it is to set up
  • It’s much easier to monitor a few plants than a large number
  • Your mistakes as a first-time grower will be less costly

Remember, most new cannabis growers will experience setbacks and lose plants to pests or disease. A failed grow of two plants will put a far smaller dent in your wallet than a lot more plants.

…But think big

When designing your space, you’ll need to take into account not only the amount of room your plants will need, but also your lights, ducting, fans, and other equipment. You’ll also have to leave enough room for you to work. Cannabis plants can double in size in the early stages of flowering, so make sure you have adequate head space!

If your grow room is a cabinet, tent, or closet, you can simply open it up and remove the plants to work on them; otherwise, you’ll need to make sure you leave yourself some elbow room.

Cleanliness is crucial

Make sure your space is easily sanitized; cleanliness is important when growing indoors, so easy-to-clean surfaces are a must. Carpeting, drapes, and raw wood are all difficult to clean, so avoid these materials if possible.

Keep it light-tight

Another crucial criterion for a grow room is that it be light-tight. Light leaks during dark periods will confuse your plants and can cause them to produce male flowers.

Other variables

When deciding where to grow your cannabis, keep the following variables in mind:

  • Convenience: You’ll need to monitor your plants carefully. Checking on them every day is important, and beginners will want to check in several times per day until they have everything dialed in. If your room is hard to access, this crucial step will be difficult.
  • Temperature and humidity concerns: If your grow space is already very warm or very humid, you’ll have issues controlling your grow environment. Choosing a cool, dry area with ready access to fresh air from the outdoors is highly recommended.
  • Stealth: You’ll most likely want to conceal your grow from nosy neighbors and potential thieves, so be sure to pick a place where noisy fans won’t garner any unwanted attention.

Step 2: Choose your cannabis grow lights

The quality of light in your grow room will be the number one environmental factor in the quality and quantity of your yield, so it’s a good idea to choose the best lighting setup you can afford.

Here’s a brief rundown of the most popular types of cannabis grow lights used for indoor growing.

HID grow lights

HID (high-intensity discharge) lights are the industry standard, widely used for their combination of output, efficiency, and value. They cost a bit more than incandescent or fluorescent fixtures, but produce far more light per unit of electricity used. Conversely, they are not as efficient as LED lighting, but they cost as little as one-tenth as much for comparable units.

The two main types of HID lamp used for growing are:

  • Metal halide (MH), which produce light that is blue-ish white and are generally used during vegetative growth.
  • High pressure sodium (HPS), which produce light that is more on the red-orange end of the spectrum and are used during the flowering stage.

In addition to bulbs, HID lighting setups require a ballast and hood/reflector for each light. Some ballasts are designed for use with either MH or HPS lamps, while many newer designs will run both.

If you can’t afford both MH and HPS bulbs, start with HPS as they deliver more light per watt. Magnetic ballasts are cheaper than digital ballasts, but run hotter, are less efficient, and harder on your bulbs. Digital ballasts are generally a better option, but are more expensive. Beware of cheap digital ballasts, as they are often not well shielded and can create electromagnetic interference that will affect radio and WiFi signals.

Unless you’re growing in a large, open space with a lot of ventilation, you’ll need air-cooled reflector hoods to mount your lamps in, as HID bulbs produce a lot of heat. This requires ducting and exhaust fans, which will increase your initial cost but make controlling the temperature in your grow room much easier.

Fluorescent grow lights

Fluorescent light fixtures, particularly those using high-output (HO) T5 bulbs, are quite popular with small scale hobby growers for the following reasons:

  • They tend to be cheaper to set up, as reflector, ballast, and bulbs are included in a single package
  • They don’t require a cooling system since they don’t generate near the amount of heat that HID setups do

The main drawback is that fluorescent lights are less efficient, generating about 20-30% less light per watt of electricity used. Space is another concern, as it would require approximately 19 four-foot long T5 HO bulbs to equal the output of a single 600 watt HPS bulb.

LED grow lights

Light emitting diode (LED) technology has been around for a while, but only recently has it been adapted to create super efficient light fixtures for indoor growing. The main drawback to LED grow lights is their cost: well designed fixtures can cost 10 times what a comparable HID setup would. The benefits are that LEDs last much longer, use far less electricity, create less heat, and the best designs generate a fuller spectrum of light, which can lead to bigger yields and better quality.

Unfortunately, there are many shoddy LED lights being produced and marketed towards growers, so do some research and read product reviews before laying down your hard-earned cash.

Induction grow lights

Induction lamps, otherwise known as electrodeless fluorescent lamps, are another old technology that has been recently adapted to suit the needs of indoor growers. Invented by Nikola Tesla in the late 1800s, the induction lamp is essentially a more efficient, longer-lasting version of the fluorescent bulb. The main drawback of these fixtures is their price and availability.

Step 3: Give your cannabis plants air

Plants need fresh air to thrive, and carbon dioxide (CO2) is essential to the process of photosynthesis. This means you will need a steady stream of air flowing through your grow room, easily achieved by means of an exhaust fan placed near the top of the room to remove the warmer air, and a filtered air inlet on the opposite side near the floor.

You’ll need to ensure that temperatures remain within a comfortable range for your plants, between 70-85°F when lights are on and between 58-70°F when they are off. Some varieties of cannabis (generally indica strains) prefer the colder side of the range, while others are more tolerant of higher temperatures.

The size of your exhaust fan will depend on the size of your grow space and amount of heat generated by your lighting system. HID systems put out a ton of heat, especially if they aren’t mounted in air-cooled hoods. People who live in warmer regions will often run their lights at night in an effort to keep temperatures in their grow down.

It’s advisable to set up your lights, turn them on for a while, and then determine how much airflow you’ll need to maintain a comfortable temperature for your plants. This will allow you to choose an exhaust fan suitable for your needs. If the odor of cannabis plants in bloom will cause you problems, add a charcoal filter to your exhaust fan.

Alternately, you can create a sealed, artificial environment by using an air conditioner, dehumidifier, and supplemental CO2 system, but this is quite expensive and not recommended for the first-time grower.

Finally, it’s a good idea to have a constant light breeze in your grow room as this strengthens your plants’ stems and creates a less hospitable environment for mold and flying pests. A wall-mounted circulating fan works well for this purpose — just don’t point it directly at your plants, because that can cause windburn.

Step 4: Pick your climate controls and monitors

Once you have selected your lights and climate control equipment, you’ll want to automate their functions. While there are sophisticated (and expensive) units available that control lights, temperature, humidity, and CO2 levels, the beginner will generally need a simple 24 hour timer for the light and an adjustable thermostat switch for the exhaust fan.

The timing of the light/dark cycle is very important when growing cannabis; generally you will have your lights on for 18 hours per 24 hour period while the plants are in vegetative growth, then switch to 12 hours of light per 24 hour period when you want them to bloom. You need your lights to turn on and off at the same times every day or you risk stressing your plants, so a timer is essential. You can use a timer for your exhaust fan as well, but spending a few extra dollars on a thermostat switch is a much better option.

With the most basic models, you simply set the thermostat on the device to the maximum desired temperature for your space and plug your exhaust fan into it. Once the temperature rises to the level you set, it will turn the fan on until temperatures fall a few degrees below the set threshold. This saves energy and maintains a steady temperature.

Since you’re probably not spending most of your time in your grow space, a combination hygrometer/thermostat with high/low memory feature can be very handy in keeping tabs on conditions in your room. These small, inexpensive devices not only show you the current temperature and humidity level, but the highest and lowest readings for the period of time since you last checked.

Step 5: Decide on a cannabis grow medium

Growing indoors means you have many different media to choose from, and whether it’s good old fashioned pots full of soil or a rockwool slab in a hydroponic tray, every medium has its benefits and drawbacks.

Here we’ll examine the two most popular methods and the media they employ.

Soil is the most traditional medium for growing cannabis indoors, as well as the most forgiving, making it a good choice for first-time growers. Any high quality potting soil will work, as long as it doesn’t contain artificial extended release fertilizer (like Miracle Gro), which is unsuitable for growing good cannabis.

A very good choice for beginners is organic pre-fertilized soil (often referred to as “super-soil”) that can grow cannabis plants from start to finish without any added nutrients, if used correctly. This can be made yourself by combining worm castings, bat guano, and other components with a good soil and letting it sit for a few weeks, or it can be purchased pre-made from a few different suppliers.

As with all organic growing, this method relies on a healthy population of mycorrhizae and soil bacteria to facilitate the conversion of organic matter into nutrients that are useable to the plant. Alternately, you can use a regular soil mix and then supplement your plants with liquid nutrients as the soil is depleted.

Soilless (aka hydroponics)

Indoor growers are increasingly turning to soilless, hydroponic media for cultivating cannabis plants. This method requires feeding with concentrated solutions of mineral salt nutrients that are absorbed directly by the roots through the process of osmosis.

The technique for quicker nutrient uptake leading to faster growth and bigger yields, but it also requires a higher order of precision as plants are quicker to react to over or underfeeding and are more susceptible to nutrient lockout and burn.

Different materials used include rockwool, vermiculite, expanded clay pebbles, perlite, and coco coir, just to name a few. Commercial soilless mixes are widely available that combine two or more of these media to create an optimized growing mix. Soilless media can be used in automated hydroponic setups or in hand-watered individual containers.

Step 6: Pick a container

What type of container you use will depend on the medium, the system, and the size of your plants. A flood-and-drain, tray-style hydroponic system may use small net pots filled with clay pebbles or just a big slab of rockwool to grow many little plants, while a “super-soil” grow may use 10 gallon nursery pots to grow a few large plants.

Inexpensive options include disposable perforated plastic bags or cloth bags, while some choose to spend more on “smart pots,” containers that are designed to enhance airflow to the plant’s root zone. Many people grow their first cannabis plants in five gallon buckets.

Drainage is key, as cannabis plants are very sensitive to water-logged conditions, so if you repurpose other containers, be sure to drill holes in the bottoms and set them in trays.

Step 7: Feed your cannabis plants nutrients

Growing high-quality cannabis flowers requires more fertilizer, or nutrients, than most common crops. Your plant needs the following primary nutrients (collectively known as macronutrients):

  • Nitrogen (N)
  • Phosphorus (P)
  • Potassium (K)

These micronutrients are needed as well, albeit in much smaller quantities:

  • Calcium
  • Magnesium
  • Iron
  • Copper

If you aren’t using a pre-fertilized organic soil mix, you will need to feed your plants at least once a week using an appropriate nutrient solution. These nutrients are sold in concentrated liquid or powder form meant to be mixed with water, and generally formulated for either vegetative or flower (“bloom”) growth. This is because cannabis has changing macronutrient requirements during its lifecycle, needing more nitrogen during vegetative growth, and more phosphorus and potassium during bud production.

Most macronutrients are sold in a two-part liquid to prevent certain elements from precipitating (combining into an inert solid that is unusable by the plant), meaning you’ll need to purchase two bottles (part A and part B) for veg, and two bottles for grow, as well as a bottle of micronutrients. Other than these basics, the only other nutrient product you may need to purchase is a Cal/Mag supplement, as some strains require more calcium and magnesium than others.

Once you’ve purchased the necessary nutrient products, simply mix them with water as directed by the label and water your plants with this solution. You should always start at half-strength because cannabis plants are easily burned. It’s almost always worse to overfeed your plants than to underfeed them, and over time you will learn to read your plants for signs of deficiencies or excesses.

It’s important to get a pH meter so you can check the pH level of your water when mixing nutrients. Cannabis prefers a pH between 6 and 7 in soil, and between 5.5 and 6.5 in hydroponic media. Letting the pH get out of this range can lead to nutrient lockout, meaning your plants are unable to absorb the nutrients they need, so be sure to test your water regularly and make sure the nutrient mix you are feeding your plants falls within the desired range.

Step 8: Water your cannabis plants

Most people won’t think twice about the water they use on their plants; if you can drink it, it must be fine, right? Well, it may not be an issue, depending on your location, but some water contains a high amount of dissolved minerals that can build up in the root zone and affect nutrient uptake, or it may contain fungus or other pathogens that aren’t harmful to people but can lead to root disease.

Additionally, some places may have high levels of chlorine in the water supply, which can be harmful to beneficial soil microbes. For these reasons, many people choose to filter the water they use in their gardens.

The most important thing to remember during this phase is to not overwater. Cannabis plants are very susceptible to fungal root diseases when conditions are too wet, and overwatering is one of the most common mistakes made by the beginning grower.

How often you water your plants will depend on the medium used, size of the plants, and ambient temperature. Some people will wait until the lower leaves of the plant start to droop slightly before watering.

As you gain experience and knowledge, you will alter your grow room and equipment to better fit your particular environment, growing techniques, and the specific strains you grow, but this article will give you a solid foundation of knowledge to get started on the right foot.

And remember, growing marijuana is a labor of love, so spend a lot of time with your plants and have fun!

This post was originally published on June 6, 2016. It was most recently updated on April 2, 2020.

Our indoor cannabis growing guide will help simplify the process for you into clear, easy-to-digest sections to help the first-time grower get started.

How to grow marijuana outdoors: a beginner’s guide

Growing cannabis is a fun and rewarding experience, but it is also challenging and takes a certain amount of time and money. For a first-time grower with limited resources, an indoor grow is probably too costly of an option.

The good news is that a small outdoor garden can yield plenty of quality cannabis without a large monetary investment. If you have access to a sunny spot in a private yard or even a balcony, terrace, or rooftop, you can successfully grow cannabis.

This guide to outdoor growing will go over all the different factors you need to consider in order to set up your first outdoor marijuana grow.

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Benefits of growing weed outdoors

  • Low costs: Relying on the power of the sun, you won’t need to spend a ton of money on an outdoor grow. You’ll need some soil, fertilizer, seeds or clones, and maybe a small greenhouse to get them started. You won’t need to pay for electricity for lights, AC units, or dehumidifiers, and you can even collect rainwater.
  • Big yields: The sky’s the limit with outdoor plants—you can let them get as big and tall as you want, as long as they’re manageable. One plant can potentially yield up to a pound of weed! Growing a handful for yourself is plenty. With an indoor grow, your space is a lot more restricted.
  • Environmentally friendly: Indoor grows can be wasteful, using a ton of electricity to power all those lights, fans, and other equipment. The sun and the wind are free!
  • It’s fun and relaxing: Don’t underestimate the therapeutic value of gardening. It’s relaxing to spend some time outside, roll up your sleeves, and get your hands dirty for a while. And there’s nothing better than smoking something you grew yourself.

Step 1: Consider the climate

It’s crucial to have a good understanding of the climate in the area you’re going to grow. Cannabis is highly adaptable to various conditions, but it is susceptible to extreme weather.

Sustained temperatures above 86°F will cause your plants to stop growing, while continued temperatures below 55°F can cause damage and stunting to plants, even death.

Heavy rains and high winds can cause physical damage to plants and reduce yields, and excessive moisture can lead to mold and powdery mildew, especially during the flowering stage.

In addition to weather patterns, you need to understand how the length of day changes throughout the seasons in your area. For example, at 32° N latitude (San Diego), you will experience just over 14 hours of daylight on the summer solstice (the longest day of the year), while at 47° N (Seattle), you will have about 16 hours of daylight on the same day.

Understanding the amount of sunlight throughout the year is crucial to causing plants to “flip” from the vegetative to flowering stage, when they start to produce buds.

It’s good to utilize local resources, as experienced gardeners in your area will have a wealth of knowledge about growing flowers and vegetables, and that information can also be applied to growing cannabis. If you have some experience gardening and growing veggies, you will probably find that growing cannabis outdoors is a fairly easy endeavor.

Step 2: Pick a space for your outdoor grow

Choosing a space for your outdoor grow is one of the most important decision you’ll make, especially if you’re planting directly in the ground or in large immobile containers.

Your cannabis plants should receive as much direct sunlight as possible, ideally during midday, when the quality of light is best. As the season changes and fall approaches, your plants will get less and less sunlight throughout the day, which will trigger the flowering stage.

Having a constant breeze is good for your plants, and especially in hot climates. But if you live in an area with a lot of high winds, consider planting near a windbreak of some sort, like a wall, fence, or large shrubbery.

Finally, you will want to consider privacy and security. A lot of people want to conceal their gardens from judgmental neighbors and potential thieves. Tall fences and large shrubs or trees are your best bet, unless you live in a secluded area. Also, most state laws require that you keep cannabis plants concealed from the street.

Some growers plant in containers on balconies or rooftops that are shielded from view, while some build heavy-gauge wire cages to keep thieves and animals at bay. Whatever you decide, think about how big you want your final plant to be—outdoor cannabis plants can grow to 12 feet tall or more, depending on how much you let them go.

Step 3: Decide on cannabis genetics

The success of your outdoor cannabis grow will also depend on choosing the right strain to grow for your particular climate and location. If you live in an area with a history of cannabis growing, chances are good that many strains will successfully grow there, and some may have even been bred specifically for your climate.

Seeds vs. clones

Plants grown from seed can be more hearty as young plants when compared to clones. You can plant seeds directly into the garden in early spring, even in cool, wet climates.

The main drawback to growing from seed is there is no guarantee as to what you’ll end up with. If your seeds don’t come feminized, you could end up with both males and females, in which case you’ll need to sex them out to get rid of the males (only females produce buds).

Even when you do have all female plants, each will be a different phenotype of the same strain. To get the best version of that strain, you’ll need to select the best phenotype, which can be a lengthy process. A lot of beginning growers start with feminized seeds.

Depending on the legality of cannabis in your state, you may be able to buy clones or seedlings from a local dispensary. Some growers stay away from these because they feel they aren’t as sturdy as growing plants from seed.

Autoflowering seeds are another popular choice for outdoor growing, as they start blooming as soon as they reach maturity regardless of the length of day. You can either have a quick-growing crop, or fit multiple harvests into a year with autoflowering cannabis.

The downside to autoflowering cannabis is they tend to be a lot less potent.

Step 4: Acquire some soil

Soil is made up of three basic components in various ratios:

  • Clay
  • Sand
  • Silt

You can plant directly in the ground or buy soil and put it in pots. Cannabis plants thrive in soil rich with organic matter, and they need good drainage. If you decide to plant directly in the ground, you’ll need to understand your soil composition and amend it accordingly.

Heavy clay soils drain slowly and don’t hold oxygen well, so they will need to be heavily amended. At least a month before you plant, dig large holes where you’ll be placing your cannabis plants and mix in big amounts of compost, manure, worm castings, or other decomposed organic matter. This will provide aeration and drainage, as well as nutrients for the plants.

Sandy soil is easy to work, drains well, and warms quickly, but it doesn’t hold nutrients well, especially in rainy environments. Again, you will want to dig large holes for your plants and add compost, peat moss, or coco coir, which will help bind the soil together. In hot climates, sandy soil should be mulched to help with water retention and to keep roots from getting too hot.

Silty soil is the ideal growing medium. It’s easy to work, warms quickly, holds moisture, has good drainage, and contains a lot of nutrients. The best silty soil is dark crumbly loam—it’s fertile and probably won’t need any amending.

If you really want to ensure good results and minimize headaches, you can get your soil tested, which is easy and relatively inexpensive. A soil testing service will tell you the makeup and pH of your soil, notify you of any contaminants, and recommend materials and fertilizers to amend your soil.

Step 5: Get some fertilizer

Cannabis plants require a large amount of nutrients over their life cycle, mainly in the form of nitrogen, phosphorus, and potassium. How you choose to feed them will depend on the composition of the soil and your own methods.

Commercial fertilizers aimed at home gardeners can be used if you have a good understanding of how they work and what your plants need. But a first-time grower might want to avoid these, particularly long-release granular fertilizers.

Best nutrients for an outdoor grow

You can purchase nutrient solutions designed specifically for cannabis from your local grow shop, but they are usually expensive and can damage soil bacteria—they are generally composed of synthetic mineral salts and intended for indoor growing.

Organic fertilization takes full advantage of microbial life in soil and minimizes harmful runoff. There are many different natural and organic fertilizers available at local home and garden stores, like blood meal, bone meal, fish meal, bat guano, and kelp meal.

Start off with fertilizers that are inexpensive and readily available. Some of these materials release nutrients quickly and are easily used by the plant, while others take weeks or months to release useable nutrients. If done correctly, you can mix in a few of these products with your soil amendments to provide enough nutrients for the entire life of your plants.

Again, getting your soil tested can be very useful and will tell you how to amend your soil and what types and amounts of fertilizer you should use. If you are unsure how much to use, be conservative—you can always top dress your plants if they start to show deficiencies.

Step 6: Choose your containers

You may need to put all of your plants in containers if you don’t have great soil. Also, if you’re unable to perform the heavy labor needed to dig holes and amend soil, containers may be the only way for you to grow your own cannabis outdoors.

If you don’t have a suitable patch of earth to make a garden, containers can be placed on decks, patios, rooftops, and many other spots. If needed, you can move them around during the day to take advantage of the sun or to shield them from excessive heat or wind.

You can also use common cannabis nutrients designed for indoor growing because you will be using premixed soil. This will take much of the guesswork out of fertilizing your plants.

However, plants grown in pots, buckets, or barrels will likely be smaller than those planted in the ground because their root growth is restricted to the size of the container. In a broad sense, the size of the pot will determine the size of the plant, although it’s possible to grow large plants in small containers if proper techniques are used.

In general, 5-gallon pots are a good size for small to medium outdoor plants, and 10-gallon pots or larger are recommended for big plants. Regardless of size, you’ll want to protect the roots of your plants from overheating during warm weather, as pots can quickly get hot in direct sunlight. This will severely limit the growth of your plants, so be sure to shade your containers when the sun is high in the sky.

Step 7: Give your cannabis plants water

While outdoor cannabis gardens have the benefit of utilizing rain and groundwater, you will most likely need to water your plants frequently, especially in the hot summer months. Some giant cannabis plants can use up to 10 gallons of water every day in warm weather.

Growers who live in hot, arid places will often dig down and place clay soil or rocks below their planting holes to slow drainage, or plant in shallow depressions that act to funnel runoff toward other plants. Adding water-absorbing polymer crystals to the soil is another good way to improve water retention. Water your plants deeply in the morning so they have an adequate supply throughout the whole day.

If you live in a particularly rainy climate, you may need to take steps to improve drainage around your garden, as cannabis roots are susceptible to fungal diseases when they become waterlogged. These techniques include:

  • Planting in raised beds or mounds
  • Digging ditches that direct water away from the garden
  • Adding gravel, clay pebbles, or perlite to the soil

If you’re using tap or well water, it’s a good idea to test it first. This water can contain high levels of dissolved minerals which can build up in soil and affect the pH level, or it can have high levels of chlorine which can kill beneficial microorganisms in soil. Many people filter their water.

Plants grown in hot or windy climates will need to be watered more frequently, as high temperatures and winds force plant to transpire at a quicker rate.

Remember that over-watering is a common mistake made by rookie growers—the rule of thumb is to water deeply, then wait until the top inch or two of soil is completely dry before watering again. An inexpensive soil moisture meter is a good tool for a beginner.

Step 8: Protect your cannabis plants

Without the ability to control the environment as easily as you can indoors, outdoor cannabis growers have to protect their plants from storms and other weather events that could damage or even kill plants.

Temperature changes

Temperatures below 40°F can quickly damage most varieties of cannabis, so if you live in a climate where late spring or early fall frosts are a common occurrence, try using a greenhouse or other protective enclosure.

Wind conditions

High winds can break branches and overly stress your plants. If your garden is located in a particularly windy spot or if you’re expecting a particularly heavy blow, set up a windbreak. This can be as simple as attaching plastic sheeting to garden stakes around your plants.

While helpful for watering your garden, rain is generally seen as a nuisance by cannabis growers. It can severely damage your crop and cause mold and mildew. You especially don’t want rain on your cannabis plants when they are flowering.

You can construct a DIY greenhouse or even just use plastic sheeting and stakes to build a temporary shelter over your plants when you know rain is on the way.

Pests

Protecting your cannabis garden from pests can be challenging. Depending on where you live, you might have to keep large animals like deer at bay by building a fence around your crop.

But the more difficult challenge is dealing with the vast array of crawling and flying insects that can attack your plants.

The best protection is to simply keep your plants healthy. Strong, vigorous cannabis plants have a natural resistance to pests that makes minor infestations easy to deal with. It’s also a good idea to keep your cannabis plants separate from other flowers, vegetables, and ornamentals, as pests can easily spread between them.

Examine your cannabis plants a few times a week with an eye out for pests. An infestation is far easier to deal with if caught early.

There are many organic pesticides designed for use specifically on cannabis, and beneficial insects are also a great option.

You should now have enough knowledge to successfully start your own outdoor cannabis garden. Cultivating and growing plants is an enjoyable and rewarding pastime, so remember, spend lots of time with your plants, and have fun!

Check out Leafly’s Growing section for more info on cannabis growing!


This post was originally published on June 21, 2016. It was most recently updated on April 2, 2020.

Growing marijuana outdoors can be less costly and challenging than an indoor grow. Check out our guide to learn more about the best outdoor grow setup.