Celery Companion Plants
Celery is a demanding, moisture-loving crop with a long season, and it performs best in rich soil that never dries out completely. Companion planting can make efficient use of a bed, but will not replace steady watering and feeding with organic matter. In many UK gardens, self-blanching celery is the simplest type to grow.
Good companions for Celery
| Plant | Why it helps |
|---|---|
| Leeks | Leeks and celery appreciate fertile, regularly watered soil, while their upright forms can be arranged in alternating blocks. |
| Bush French beans | These can fit near celery in a well-fed bed, but leave enough space for air circulation and watering. |
| Cabbages | Both enjoy rich ground and steady moisture, though cabbage spacing must not shade celery as it establishes. |
| Spinach | Quick spinach can fill open spaces beside young celery before its stems and leaves become more substantial. |
| Pot marigolds | Calendula at the bed edge adds flowers for insects and is easy to remove if it begins competing. |
| Nasturtiums | Nasturtiums may bring flowers to the plot, but keep their trailing stems away from celery's moist rooting area. |
Keep Celery away from
| Plant | Why to separate them |
|---|---|
| Potatoes | Potatoes need earthing up and later digging, activities that can disturb celery roots and interrupt careful watering. |
| Fennel | Fennel is best in a separate area because it grows vigorously and is likely to compete for light and space. |
| Sweetcorn | Tall sweetcorn can shade celery, which needs an open site and consistent moisture during its long growing period. |
Tips
Sow under cover from February to April, then plant out after frost at about 30 cm spacing. Improve soil beforehand with well-rotted organic matter and mulch after planting to conserve moisture. Water frequently in dry weather, keeping the bed evenly moist. Harvest individual outer stems first, or cut whole plants when thick and crisp.
Celery companion planting: frequently asked questions
What are good companion plants for celery?
Good companions for celery include Leeks, Bush French beans, Cabbages, Spinach, Pot marigolds, Nasturtiums.
What should you not plant near celery?
Keep celery away from Potatoes, Fennel, Sweetcorn.
How does companion planting help celery?
Celery is a demanding, moisture-loving crop with a long season, and it performs best in rich soil that never dries out completely.
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Companion planting is a traditional practice; results vary with your climate, soil and garden. Page updated 18 Sep 2026.