What should not be planted next to celery?
Written by
Michael Sullivan
Reviewed by
Prof. Martin Thorne, Ph.D.Companion planting has a substantial impact on celery growth and health. Some plants provide competition, while others can attract unwanted pests. Understanding which plants celery should not be grown with can help prevent the spread of disease or the depletion of nutrients from your soil. In addition to companion planting, actual spacing will allow your celery to thrive without additional challenges.
Heavy Feeders
- Corn depletes nitrogen rapidly from surrounding soil
- Sunflowers release growth-inhibiting allelopathic chemicals
- Squash creates excessive shade blocking sunlight
Disease Carriers
- Potatoes spread early blight through soil contact
- Tomatoes attract leafhoppers that target celery
- Eggplants host verticillium wilt pathogens
Beware of other root veg, which may have similar pests. Carrots and parsnips attract the same carrot fly, which harms the roots of their neighbour's celery. Radishes frequently become infested with aphids as they move to the leaves of the celery. Delimit each other's territory by planting them in separate beds or a barrier of crops.
Use space strategically. Consider using trap crops (such as nasturtiums) in an area with celery. Add buffer zones with neutral plants, like lettuce. Change the celery locations each year. This will prevent pest cycles and soil nutrient depletion.
Helpful companions help mitigate risk, for example, grow dill to keep aphids away. Plant onions to keep carrot flies away. Bush beans increase nitrogen in your soil. These companions not only help with the health of celery but also maximize your limited garden space.
Watch for signs of cross-contamination. If you see yellowing leaves, it means the plants are competing underground. If you see holes in stalks, there may be a pest that shared both plants. Arrange the plants differently right away. Good planning and timing will avoid most problems before they reach the harvest.
Read the full article: How to Grow Celery: Expert Tips for Success
