Pepper Companion Plants
Vegetable75 days to maturity
Peppers are warm-season nightshades grown for their sweet or hot fruit, needing steady heat and a long growing season to produce well. They have a compact, upright habit and shallow roots, so they benefit from neighbors that shade the soil and don't compete heavily for nutrients. Aphids, flea beetles, and hornworms are the pests that trouble them most.
Companion Checker: what grows well with Pepper?
Tap any plant to see whether it pairs well with Pepper and why. Green means a beneficial companion, red means keep them apart.
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Companion Planting Strategy for Pepper
Peppers do best with low-growing companions that keep the soil cool and moist without crowding the plants, plus aromatic herbs that help repel aphids and other soft-bodied pests. Like tomatoes, they should be kept away from plants that secrete growth inhibitors or that share their pest and disease problems.
Best Companion Plants for Pepper
These plants grow well alongside Pepper — providing pest control, attracting pollinators, or making better use of your garden space.
Basil's aroma helps repel aphids and thrips off peppers and the two enjoy identical warm, sunny, evenly moist conditions.
Carrots root deep below the peppers' shallow roots and their feathery tops shade and loosen the soil without competing.
Onions take little space and their pungent scent helps deter aphids and other pests from the pepper bed.
What Not to Plant With Pepper
Keep these away from Pepper. They compete for resources, attract shared pests, or inhibit each other's growth.
Fennel releases allelopathic compounds that inhibit the growth of most garden vegetables, peppers included, so it should be grown well apart.
Kohlrabi is a heavy-feeding brassica that competes with peppers for nutrients and tends to stunt them when grown close.
How to Grow Pepper
- Botanical name
- Capsicum annuum
- Family
- Nightshade (Solanaceae)
- Sun
- Full sun, 6-8+ hours daily
- Water
- 1-2 inches per week, consistent and deep
- Soil
- Rich, well-draining loam, pH 6.0-6.8
- Spacing
- 18-24 inches apart; rows 24-36 inches
- Planting depth
- Transplant at the same depth as the root ball
- Germination
- 7-21 days at 75-85F
- Days to maturity
- 60-90 days from transplant
- When to plant
- Transplant 2-3 weeks after last frost once nights stay above 55F
- Harvest
- Pick green or wait for full color; cut fruit with pruners to avoid breaking stems
Common Pepper Problems
Blossom end rot (sunken brown patches on the fruit bottom)
Water deeply and evenly, mulch to hold moisture, and avoid excess nitrogen so plants can take up calcium.
Aphids (curled leaves, sticky honeydew, stunted growth)
Spray with water or insecticidal soap and encourage ladybugs and lacewings to keep populations down.
Flea beetles (tiny shot-hole damage on leaves, worst on seedlings)
Protect young plants with row cover, use yellow sticky traps, and dust with kaolin clay if pressure is high.
Sunscald and blossom drop (pale soft patches on fruit; flowers fall in heat)
Maintain healthy leaf cover to shade fruit and keep moisture steady; blossom drop usually stops when temperatures moderate.
Pepper Companion Planting FAQ
What are the best companion plants for peppers?
Basil is a favorite pepper companion because it shares the same warm conditions and helps repel aphids and thrips. Carrots and onions also pair well, using different soil space and adding pest-deterring scent without crowding the peppers.
What should you not plant with peppers?
Keep peppers away from fennel, which releases allelopathic compounds that inhibit the growth of nearby vegetables. Avoid heavy-feeding brassicas like kohlrabi too, since they compete for nutrients and can stunt pepper plants.
When should you plant peppers?
Peppers love heat, so transplant them 2 to 3 weeks after your last frost once night temperatures stay reliably above 55F. Planting into cold soil stalls growth, so it pays to wait until the ground has warmed.
How far apart should pepper plants be spaced?
Space pepper plants 18 to 24 inches apart in rows 24 to 36 inches apart. This gives them airflow to prevent disease while keeping them close enough to lightly shade each other's fruit and reduce sunscald.
More vegetable companions
Plan Your Pepper Garden
Use our interactive tools to design the perfect garden with Pepper and its companions.