Companion Plant Guide
Bean
Beans climb the stalks and add nitrogen corn feeds on.
Vegetable · Grass family
Corn companion plants
Zea mays
What to plant with corn, what to keep apart, and how to grow it — sun, spacing, soil and the reason behind every pairing.
Photo: Jen Theodore on Unsplash
Overview
Growing corn beside the right neighbour
Corn (Zea mays) is a vegetable in the Grass family. Tall warm-season grain grown for sweet cobs; wind-pollinated, so it needs a block to set full ears.
Plant corn in blocks, not single rows — it is wind-pollinated, and it is the tall sister in the three sisters bed.
Give plants 8–12 in in full sun. Aim for rich, well-draining soil high in nitrogen. In most gardens the crop sits in USDA zones 3-11 and is ready in about 60-100 days.
Grows well with
What to plant with corn
The best companion plants for corn in this guide are Bean, Squash, Pumpkin, Pea, and Cucumber. Each pairing below is a reason to share a bed — pest masking, roots that do not compete, or insects that hunt the pests drawn to corn.
Squash
Broad leaves shade the soil, hold moisture and smother weeds.
Pumpkin
Sprawling vines cover the ground between stalks, like squash.
Pea
Early peas can climb young stalks and add nitrogen.
Cucumber
Vines ramble happily in the light shade of the stalks.
Keep apart
What not to plant with corn
Keep corn away from Tomato. These neighbours compete for the same food, release chemicals that stunt growth, or otherwise hold the crop back.
Tomato
Corn earworm and tomato fruitworm are the same insect — together they feed it twice.
In the bed
How to grow corn
| Sun | Full sun |
|---|---|
| Spacing | 8–12 in |
| Soil | Rich, well-draining soil high in nitrogen |
| Hardiness | Zones 3-11 |
| Days to maturity | 60-100 |
These notes sit beside the companion lists — they are how corn actually occupies the bed, not a substitute for local climate.
- Plant in blocks at least four rows deep for good pollination
- Sow after the last frost once soil reaches about 60°F (16°C)
- Water deeply when tassels and silks appear
- Harvest when silks turn brown and kernels give milky juice
Questions
Corn companion planting FAQ
What can I plant next to corn?
Plant Bean, Squash, Pumpkin, Pea, and Cucumber beside corn. Bean: Beans climb the stalks and add nitrogen corn feeds on. Squash: Broad leaves shade the soil, hold moisture and smother weeds. Pumpkin: Sprawling vines cover the ground between stalks, like squash. Pea: Early peas can climb young stalks and add nitrogen. Cucumber: Vines ramble happily in the light shade of the stalks.
What should I not plant with corn?
Keep corn apart from Tomato. Tomato: Corn earworm and tomato fruitworm are the same insect — together they feed it twice.
How much sun do corn plants need?
Corn plants want full sun. Space them 8–12 in apart in rich, well-draining soil high in nitrogen.
How long do corn plants take to mature?
Most corn plants are ready in about 60-100 days. Corn grows in USDA hardiness zones 3-11.
Compare every pairing at a glance
Open the guide, pick corn, and see what thrives alongside it — and what quietly holds it back.
Open the pairing guide