Squash Companion Plants
Companion planting pairs squash with neighbors that may support pollination, confuse or draw off common pests, and make better use of garden space. Squash has big leaves and sprawling vines, so it can shade out weeds while taller partners lend support or light cover. Squash also depends heavily on bees and other pollinators, so flowering companions that pull in beneficial insects are a natural fit. These are traditional pairings, and results vary with your soil, climate, and pest pressure.
Good companions for Squash
| Plant | Why it helps |
|---|---|
| Corn | Grows tall to offer vertical structure and light shade, a classic Three Sisters partner for squash. |
| Pole beans | Fix nitrogen in the soil and climb corn, rounding out the Three Sisters trio with squash below. |
| Nasturtium | Often used as a trap plant to lure squash bugs and aphids away from the vines. |
| Borage | Bright flowers draw in bees and other pollinators that squash needs to set fruit. |
| Marigold | Traditionally planted around squash in the hope of discouraging some soil and leaf pests. |
| Radish | A quick, easy crop long interplanted with squash to help deter certain pests while it matures. |
| Dill | Its flowers attract beneficial insects that prey on common garden pests. |
| Sunflower | Tall blooms pull in pollinators and give the patch a bit of afternoon shade. |
Keep Squash away from
| Plant | Why to separate them |
|---|---|
| Potatoes | Both are heavy feeders that compete for the same nutrients and can trade pest and disease pressure. |
| Cucumbers | As a fellow cucurbit it shares squash pests and diseases, which spread quickly between them. |
| Melons | Another close cucurbit relative that draws the same bugs and crowds squash for room. |
| Fennel | Tends to hold back many nearby vegetables, so it is best kept in its own corner. |
Tips
Give squash plenty of room and plant flowering companions like borage or marigold nearby to bring in the pollinators it relies on. Keep other cucurbits at a distance so shared pests and diseases have a harder time jumping from plant to plant, and rotate where you plant squash each year. Companion planting is a traditional practice, so treat these pairings as a starting point and watch how they perform in your own garden.
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Companion planting is a traditional practice; results vary with your climate, soil, and garden. Page updated Aug 4, 2026.