Companion Plants for Pumpkins

Traditional companions for pumpkins include sweet corn, cantaloupe, marigolds, nasturtiums, oregano, zucchini and summer squash and 2 more in the table below.

Keep potatoes away from them.

These are garden traditions, collected from 10 US extension guides. Few have been tested in trials, so treat them as a starting point: spacing, sun and rotation matter more.

Good companions for pumpkins

Spacing is per square foot, for a raised bed planted square by square. Cool-season companions can share the bed before or after a warm-season crop, or grow in its shade.

Traditional companions for pumpkins
Plant	Kind	Spacing	Season
Zucchini and Summer Squash	Vegetable	1 per 4 sq ft	Warm season
Sweet Corn	Vegetable	1 per sq ft	Warm season
Winter Squash	Vegetable	1 per 2 sq ft	Warm season
Oregano	Herb	1 per sq ft	Warm season
Marigolds	Flower	1 per sq ft	Warm season
Nasturtiums	Flower	1 per sq ft	Warm season
Cantaloupe	Fruit	1 per 4 sq ft	Warm season
Watermelon	Fruit	1 per 4 sq ft	Warm season

What not to plant with pumpkins

Potatoes: usually planted in a different bed.

What the evidence says

Companion planting charts come from long garden experience, and most pairs have never been tried in a replicated trial. Several extension services say so directly; one review gives traditional charts more entertainment than scientific value.

What reliably helps pumpkins: the right planting dates, enough space, and moving crops to a new bed each year (crop rotation).

Plant them side by side

Draw your beds, tap squares to plant pumpkins next to their companions, and get every crop's planting dates for your ZIP code. Free, in your browser.

Open the garden planner When to plant pumpkins

Questions

What can I plant with pumpkins?

The traditional companions are sweet corn, cantaloupe, marigolds, nasturtiums, oregano, zucchini and summer squash, watermelon and winter squash. Plant companions in neighbouring rows or squares rather than in the same hole.

What should not be planted with pumpkins?

The guides keep potatoes apart from pumpkins. Give it a different bed.

Does companion planting with pumpkins work?

Most pairings are tradition rather than tested results: extension services call companion planting promising but largely unproven. None of the pairs for this crop has been tested in a trial we could find. Good spacing, sun, water and rotation do more for a harvest than any single pairing.

How close can cantaloupe grow to pumpkins?

In a raised bed planted by the square foot, give pumpkins 1 per 9 sq ft and cantaloupe 1 per 4 sq ft, in neighbouring squares. In rows, pumpkins need 48 in between plants.