02/06/2026
Saving for later!
Tomatoes don't need to grow in bare soil — and they thrive when they don't.
The space beneath staked or caged plants can support companions that deter pests, attract pollinators, fix nitrogen, and keep roots cool, all while tomatoes reach upward.
- Basil — Zones 5–10
Repels aphids, whiteflies, and hornworms while improving tomato flavor when planted close.
- Marigold — Zones 2–11
Deters nematodes in soil and repels aphids and tomato hornworms with strong scent.
- Nasturtium — Zones 3–10
Acts as a trap crop, drawing aphids away from tomato foliage.
- Borage — Zones 3–10
Attracts pollinators and beneficial insects while repelling tomato hornworms.
- Chives — Zones 3–9
Repels aphids and improves tomato health with sulfur compounds in roots.
- Parsley — Zones 4–9
Attracts hoverflies and predatory wasps that feed on tomato pests.
- Carrots — Zones 3–10
Loosen compacted soil with deep taproots and harvest before tomatoes spread wide.
- Calendula — Zones 2–11
Draws beneficial insects and adds bright color beneath green tomato foliage.
- Garlic — Zones 3–9
Natural fungicide and pest deterrent that protects tomato roots from soil diseases.
- Oregano — Zones 5–9
Low-growing aromatic groundcover that repels pests and tolerates tomato shade.
- Thyme — Zones 4–9
Fragrant mat that covers soil, reduces weeds, and deters whiteflies.
- Sweet Alyssum — Zones 5–9
Honey-scented blooms attract parasitic wasps and lacewings that control aphids.
When companions are layered beneath tall crops, every level of the garden produces and protects.
