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Best Companion Plants for Growing Marijuana

December 26, 2019


companion plant for marijuana

There are a lot of factors that play into the art of growing marijuana, and the most important one is making sure that the environment is suitable for a healthy plant lifecycle. 

When cannabis grows in optimum conditions, the yield is richer and the plant has the opportunity to grow to the best version possible.

There are many aspects that prohibit it from doing so, ranging from pests, to improper nutrient absorption, anti-growth elements in the air and so much more. 

Thankfully, there is an ingenious and easy way around it; companion planting. This 10,000-year-old technique will help cannabis plants grow in a healthy manner without any extra effort.

At a Pot for Pot, we’re huge fans of planting your own seeds, whether it’s cannabis or anything else. Here are some suggestions for marijuana companion plants.


What Is Companion Planting?

Companion planting falls under the scope of permaculture, which replicates natural ecosystems. Companion planting is making use of other plants and herbs to facilitate the healthy growth of the primary plant, which in this case is marijuana.

There are many benefits associated with companion planting, considering that it’s an age-old technique.

There are no drawbacks for using it, and it is an inexpensive and easy way to help with the growth of cannabis in the grow room.

Benefits of Companion Planting

cannabis plant

With a strategic approach, companion plants can help increase the yield of cannabis crops tremendously.

Companion planting helps with pest control, nutrient refinement, and soil integrity, which are all integral factors of healthy cannabis growth.

Many companion plants act as a stealth cover for the grow. Using these companion plants will result in a safe, secure, and even discreet growth period, which for a grower, results in a stress-free experience and a better return on investment of time, money, and effort.

Best Plants For Companion Planting

These herbs and flowers help cannabis grow in a more efficient and productive manner. Each of them can be used for a different purpose, from stealth to nutrient absorption.

There are multiple benefits that come from using these as companion plants for any cannabis crop.

1. Chamomile

Chamomile is a great defender against pests and whiteflies. While it is more famously known for producing calming tea, chamomile is a strong protective plant for cannabis, especially in the earlier stages.

Planting it next to cannabis keeps the insects at bay and can give younger plants a nutritional boost as well.

2. Dill

Dill plants


This popular herb is an ideal companion plant for cannabis. Dill has strong protective qualities which makes it an ideal defender companion plant. Dill drives insects like caterpillars away from cannabis as they prefer dill over other plants.

Dill also has strong repelling powers against bugs, mites, and aphids. Not only is it easy to plant, one can do so without causing any harm to the crop. 

3. Basil

Basil plant


This ‘Prince of Plants’ is also a great companion plant for cannabis. Many farmers believe that basil helps improve the flavor of their crops like tomatoes. In the case of cannabis, it can boost the production of terpenes, which are essential oils found in cannabis. 

Not only does it promote the growth of terpenes but it also attracts insects that help the cannabis plant while driving away harmful insects like asparagus beetles, mosquitos, and whiteflies.

4. Alfalfa

Alfalfa is a famous high grass - no, not cannabis, but a crop known to repel lygus bug. This pest is particularly harmful to the growth of marijuana.

Alfalfa also helps with adjusting the nitrogen levels in the soil, which are key to the growth of any plant - especially cannabis while it stores iron, magnesium, phosphorus, and potassium, all of which are important nutrients.

5. Lemon Balm

Want to hide the odor of growing cannabis? Start by planting lemon balm around it. Lemon balm has an effective aroma that helps disguise the smell of marijuana.

This is particularly helpful with nosy neighbors and in areas where cannabis cultivation is frowned upon. The stealth benefit alone is a huge plus point of using Lemon Balm as a companion plant for any cannabis garden.

Lemon balm also helps repel mosquitoes and gnats, which keep the plants safe.

Find out more about our Superb Soil at a Pot for Pot to help you grow cannabis successfully.

6. Sunflower

Sunflower plant

Sunflowers are among the top companion plants for cannabis. Not only are they beautiful, but they also serve a strong purpose in cannabis cultivation. Sunflowers are helpful in luring insects away from cannabis due to their dominant presence.

Sunflower roots are helpful in soil filtration and preservation. Disguising any cannabis plant is easier when there are sunflowers next to it, they draw all the attention to themselves and leave little to no room for any distraction.


7. Lavender

Lavender Plant

Aesthetic value aside, lavender is highly useful for cannabis cultivation. Fleas, ticks, and mice are highly repulsed by the smell of lavender. 

Planting it next to marijuana will keep pesky pests away and the cultivation safe from unwanted intruders.

Nectar-feeding bugs, which are beneficial to cannabis cultivation, love lavender and are attracted to it, thus benefiting the growth process of marijuana as well. Plus, it works great as a relaxant alongside cannabis.

8. Yarrow

Yarrow is a garden edge plant, which means that simply planting it around cannabis will not only save space but also help in yielding higher growth results.

Yarrow helps facilitate the release of essential oils in plants in its vicinity, which is an important aspect for any cannabis grower.

Yarrow also attracts insects like ladybugs, hoverflies, aphid lions, and mini wasps which end up protecting the marijuana plant.

9. Coriander

Coriander plant

The strong and mostly undesirable scent of coriander keeps insects like aphids, spider mites, and potato beetles at bay.

On the other hand, it attracts tachinid flies, hoverflies, and a variety of parasitoid wasps that prey on bugs that cause harm to cannabis plants.

Using coriander as a companion plant for cannabis cultivation is a great way to deter pests and keep the plants safe from any unwanted visitors.

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Selecting a companion plant should be decided based on the purpose it serves. From disguising the cultivation to protecting it from pests, there are many benefits to using companion plants while cultivating cannabis.

One should always understand the different benefits and then move ahead to ensure proper nourishment and healthy growth for cannabis.

Don’t forget to keep your cannabis plants healthy with the right soil, peat moss pellet, and more, which you can find at a Pot for Pot.


Frequently Asked Questions about Companion Plants

What are good companion plants for outdoor cannabis?

Here are some good companion plants for outdoor cannabis: Cerastium, Sunflower, Marigold, Alfalfa, Red Clover, and Chervil

What are good companion plants for Indoor cannabis?

Anything except a male cannabis plant. For indoor cannabis, you need to be growing female plants only. A male plant will pollinate the entire room, resulting in seeds, not unfertilized flowers.

What do companion plants help with?

Companion plants provide essential nutrients, neutral shade, attract the ideal insects, and keep away the bad ones

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