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Bacterial Leaf Spot in Celery

How to identify and treat bacterial leaf spot in Celery.

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Celery care requirements

water
Keep soil consistently moist but not waterlogged; water deeply 2–3 times weekly. Mulch to retain moisture.
soil
Rich, well-draining loam with high organic matter and pH 6.0–7.0. Prefers fertile, slightly alkaline soil.
light
Full sun (6–8 hours daily); partial shade in hot climates.
symptoms

Symptoms to look for in Celery

  • fiber_manual_recordSmall, angular, water-soaked spots on leaves
  • fiber_manual_recordSpots turning brown to black with a yellow halo
  • fiber_manual_recordSpots merging into larger dead patches, causing leaf drop
help

Common causes in Celery

Caused by Pseudomonas or Xanthomonas bacteria that spread via splashing water and contaminated tools, favored by warm, humid conditions and overhead irrigation.

healing

How to treat bacterial leaf spot in Celery

Remove and destroy affected leaves, avoid working with wet foliage, and apply copper-based bactericide to slow spread on valuable plants.

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Preventing bacterial leaf spot in Celery

Water at the soil level rather than overhead, space plants for airflow, and use disease-free seed or transplants.

Bacterial Leaf Spot in Celery — Symptoms & Treatment | GreenScout