02/11/2026
Squash doesn't need empty ground beneath its sprawling vines — and it thrives with company.
The space under broad leaves can support companions that fix nitrogen, draw pollinators, trap pests, and keep soil shaded, all while squash reaches across the bed.
- Nasturtium — Zones 3–10
Acts as a trap crop, drawing squash bugs, aphids, and cucumber beetles away from vines.
- Marigold — Zones 2–11
Deters squash bugs and vine borers with strong scent while attracting beneficial predators.
- Borage — Zones 3–10
Attracts pollinators to squash flowers and improves pollination rates for better fruit set.
- Radish — Zones 2–11
Breaks up compacted soil with taproots and harvests early before squash vines spread wide.
- Bush Beans — Zones 3–10
Fix nitrogen in soil, feeding heavy-feeding squash plants naturally throughout the season.
- Garlic — Zones 3–9
Natural fungicide that helps prevent powdery mildew on squash leaves.
- Oregano — Zones 5–9
Low-growing aromatic mat that repels pests and tolerates deep shade as vines expand.
- Dill — Zones 2–11
Attracts lacewings, hoverflies, and parasitic wasps that control squash bug eggs and aphids.
- Calendula — Zones 2–11
Draws beneficial insects and adds bright color beneath green squash foliage.
- Sweet Alyssum — Zones 5–9
Honey-scented groundcover that attracts tiny parasitic wasps and ground beetles.
- Lettuce — Zones 2–9
Quick-growing greens that thrive in the cool shade created by squash leaves.
- Thyme — Zones 4–9
Fragrant mat that covers soil, reduces weeds, and deters squash vine borers.
When squash vines are underplanted with purpose, the entire bed becomes a productive ecosystem instead of a pest magnet.
