Companion Planting Benefits for Cannabis: Harnessing the Power of Dill, Cilantro, Parsley, and Nitrogen Fixers

Photo Credit: Huckleberry Farms in Humboldt, CA

Companion planting is a centuries-old gardening practice that involves strategically planting different types of crops together to create a harmonious and productive ecosystem. This method has gained popularity among cannabis cultivators because it offers a natural and chemical-free way to enhance plant growth, deter pests, and improve overall garden health. In this article, we’ll explore the benefits of companion planting with specific focus on dill, cilantro, parsley, and the vital role of nitrogen-fixing plants in cannabis cultivation.

The Role of Nitrogen Fixers

Nitrogen is a vital nutrient for cannabis plants as it is a key component of chlorophyll, which is essential for photosynthesis and overall plant growth. Nitrogen-fixing plants, such as beans, peas, yarrow, and cilantro, play a pivotal role in enriching the soil with this critical nutrient. Here’s how they contribute to the well-being of your cannabis garden:

Beans and Peas:

These leguminous plants have nodules on their roots that contain nitrogen-fixing bacteria. These bacteria take atmospheric nitrogen and convert it into a form that cannabis plants can readily absorb.

Improved soil quality and increased nitrogen levels result in healthier cannabis plants with vibrant green foliage and robust growth.


Yarrow is not only a nitrogen fixer but also an excellent attractor of beneficial insects like bees and predatory insects that feed on aphids.

By improving soil drainage and nutrient content, yarrow enhances the overall health of your cannabis garden while deterring aphid infestations.


Cilantro not only fixes nitrogen but also possesses pest-repelling properties. It naturally repels aphids and spider mites, making it a valuable ally in the battle against common cannabis pests.

The presence of cilantro can attract beneficial insects like butterflies, ladybugs, bees, and caterpillars that help maintain a balanced ecosystem.

Companion Plants for Pest Management

In addition to nitrogen-fixing plants, other companion plants can further assist in pest management in your cannabis garden. Here are some notable examples:


Dill is known for its ability to attract ladybugs, parasitic wasps, and hoverflies. These beneficial insects are natural predators of aphids and thrips, which are common cannabis pests.

By planting dill alongside your cannabis, you not only enhance the biodiversity of your garden but also provide a reliable source of food and shelter for these helpful insects.

Cilantro (Continued):

As mentioned earlier, cilantro’s pest-repelling properties make it a valuable companion for cannabis plants. Its presence can help deter aphids and spider mites.

In addition to its pest-repelling qualities, cilantro’s aromatic foliage can provide a pleasant scent to your garden.


Parsley, like cilantro, is an excellent pest-repellent companion plant. It can deter aphids and attract beneficial insects that control pest populations.

The lush foliage of parsley also adds visual appeal to your cannabis garden.


Chrysanthemums contain natural pest-repelling properties and can deter ticks and other unwanted pests.

They also attract parasitic wasps and butterflies, which are beneficial insects that help maintain a balanced ecosystem.


Cosmos plants attract green lacewings, which are natural predators of aphids, thrips, and scale insects.

Their tall growth can serve as a protective barrier, concealing your cannabis plants from potential pests.


Nasturtiums trap aphids and attract ladybugs that feed on them, effectively reducing aphid populations in your garden.

Their vibrant flowers are not only visually appealing but also edible, making them a unique addition to your culinary creations.

Incorporating companion planting with dill, cilantro, parsley, and nitrogen-fixing plants into your cannabis garden is a wise and eco-friendly strategy that can yield numerous benefits. From enhancing soil quality and boosting nutrient levels to warding off pests and attracting beneficial insects, these companion plants play a crucial role in promoting the health and vitality of your cannabis crops.

By adopting this holistic approach to gardening, you not only nurture sustainable cultivation practices but also create a flourishing ecosystem within your garden. This ecosystem can foster healthier, more robust cannabis yields while reducing the need for chemical pesticides and fertilizers.

To further enhance your cannabis cultivation knowledge and access a handy educational poster detailing companion planting for cannabis, we invite you to visit CWI’s Tools & Resources Section. This poster offers valuable insights, planting guidelines, and visual references that can be instrumental in optimizing your cannabis garden’s success. Embrace the power of companion planting, and watch your cannabis garden thrive in a balanced and harmonious environment.


Subscribe to our Newsletter

Stay up to date on live and on-demand training, events, and more!