Pepper Companion Plants

Claim. Basil is said to repel aphids and improve peppers, by extension from the tomato tradition. No pepper-specific evidence; basil and peppers do share season and watering needs, which makes them convenient neighbours.

Mechanism. Proposed by tradition; not demonstrated in a controlled comparison.

Conditions. Planted together Both plants must be present at the same time.

Applies when. Optional experiment, not a guarantee.

Limitations. Convenience pairing, not evidence.

Evidence. Tier D: Traditional knowledge or structured community observations without a controlled comparison. (tradition).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record basil--pepper--pest_suppression v1. Request a correction.

Claim. We did not find a source that establishes a benefit or harm between pepper and eggplant.

Mechanism. None documented.

Conditions. Planted together Both plants must be present at the same time.

Applies when. The planner evaluates spacing, light, water and timing normally.

Limitations. Same family and rotation group; no companion effect documented.

Evidence. Unknown: No source meeting the inclusion rules. (none).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record pepper--eggplant--other v1. Request a correction.

Claim. We did not find a source that establishes a benefit or harm between pepper and marigold.

Mechanism. None documented.

Conditions. Planted together Both plants must be present at the same time.

Applies when. The planner evaluates spacing, light, water and timing normally.

Limitations. The glasshouse whitefly study was on tomato; no pepper trial found.

Evidence. Unknown: No source meeting the inclusion rules. (none).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record pepper--marigold--other v1. Request a correction.

Claim. We did not find a source that establishes a benefit or harm between okra and pepper.

Mechanism. None documented.

Conditions. Planted together Both plants must be present at the same time.

Applies when. The planner evaluates spacing, light, water and timing normally.

Limitations. Sometimes recommended for shade; no evidence found.

Evidence. Unknown: No source meeting the inclusion rules. (none).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record okra--pepper--other v1. Request a correction.

Claim. We did not find a source that establishes a benefit or harm between tomato and pepper.

Mechanism. None documented.

Conditions. Planted together Both plants must be present at the same time.

Applies when. The planner evaluates spacing, light, water and timing normally.

Limitations. Same family: no live companion effect is documented, but they share wilts and flea beetles and must rotate together. See the rotation section.

Evidence. Unknown: No source meeting the inclusion rules. (none).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record tomato--pepper--other v1. Request a correction.