Companion planting is an effective gardening technique that involves growing different plants together to promote healthy growth, deter pests, and increase yield.
Peppers, whether sweet or hot, can benefit from well-chosen companions that enhance their growth and protect them from common garden threats. However, some plants can hinder their development and should be avoided.
Best Companion Plants for Peppers
1. Herbs
Oregano
Oregano is a strong-smelling herb that helps deter insect pests while improving soil health. It also provides ground cover to retain moisture and reduce weeds.
Thyme
Thyme serves as a great pest deterrent, keeping aphids and cabbage worms away from pepper plants. Its small size also prevents competition for nutrients.
Dill
Dill attracts beneficial insects like ladybugs and hoverflies that help control aphids and other pests that commonly attack peppers.
Basil
Basil is a fantastic companion for peppers, as it repels pests like aphids, spider mites, and mosquitoes. It also enhances the flavor of peppers and attracts pollinators.

2. Vegetables
Tomatoes
Tomatoes and peppers share similar growing conditions and complement each other well. However, they are both susceptible to similar diseases, so crop rotation is essential to avoid soil-borne issues.
Carrots
Carrots help loosen the soil, improving drainage and allowing pepper roots to develop more efficiently. Their differing root structures prevent nutrient competition.
Spinach and Lettuce
These leafy greens grow well alongside peppers without competing for nutrients. They provide shade for the soil, helping to retain moisture and reduce weeds.
Onions and Garlic
Alliums like onions and garlic deter many common pepper pests, including aphids and spider mites. Their strong scent confuses and repels insects.

3. Flowers
Marigolds
Marigolds are a top choice for companion planting with peppers. They help deter nematodes in the soil and repel aphids, whiteflies, and beetles, creating a protective barrier around pepper plants.
Nasturtiums
These flowers act as a trap crop, drawing aphids and other pests away from peppers. They also repel whiteflies and improve overall biodiversity in the garden.
Petunias
Petunias attract beneficial insects while repelling common garden pests like aphids, hornworms, and leafhoppers, making them an excellent choice near peppers.
4. Legumes
Bush Beans & Peas
Legumes fix nitrogen in the soil, which benefits pepper plants by improving soil fertility. They also help provide light shade that can protect peppers from extreme heat.

Worst Companion Plants for Peppers
While many plants can benefit peppers, some can hinder their growth or attract unwanted pests. Here are some plants to avoid near peppers:
1. Brassicas (Cabbage Family)
- Cabbage
- Broccoli
- Cauliflower
- Kale
Brassicas compete heavily for nutrients, which can stunt the growth of pepper plants. They also attract pests like cabbage worms that may migrate to pepper plants.
2. Fennel
Fennel is known to inhibit the growth of many plants, including peppers. It releases allelopathic chemicals that can stunt their development.
3. Corn
Corn and peppers attract similar pests, such as corn earworms and aphids. Growing them together can lead to increased infestations.
4. Potatoes
Potatoes and peppers are both susceptible to blight and other soil-borne diseases. Planting them together increases the risk of disease transmission.

Additional Tips for Successful
- Rotate Crops: Avoid planting peppers in the same spot every year to reduce soil depletion and disease risk.
- Mulch Well: Use organic mulch like straw or wood chips to retain moisture, suppress weeds, and improve soil health.
- Encourage Beneficial Insects: Planting flowers and herbs nearby attracts pollinators and predatory insects that help control pests.
- Provide Proper Spacing: Peppers need good airflow to prevent fungal diseases, so space them properly between companion plants.
Companion planting is a powerful method to improve pepper plant health, deter pests naturally, and boost yield. By choosing the right companion plants and avoiding detrimental ones, you can cultivate a thriving and productive pepper garden.