alternaria blight on Vegetable Garden
Quick answer
If your Vegetable Garden has alternaria blight, the most likely cause is: Alternaria fungi spread rapidly in warm to hot, wet weather through wind-driven or splashing rain. The fungi produce targetlike concentric ring spots on leaves that expand and merge, eventually killing foliage and reducing harvest of roots, flowerheads, or fruits.
Start here:
- 1. Remove infected leaves or plants immediately to prevent spread
- 2. Apply Bacillus subtilis spray, baking soda solution, or compost tea early in the day
Why Vegetable Garden gets alternaria blight
Alternaria fungi spread rapidly in warm to hot, wet weather through wind-driven or splashing rain. The fungi produce targetlike concentric ring spots on leaves that expand and merge, eventually killing foliage and reducing harvest of roots, flowerheads, or fruits.
How to reverse alternaria blight on Vegetable Garden
- 1
Remove infected leaves or plants immediately to prevent spread
- 2
Apply Bacillus subtilis spray, baking soda solution, or compost tea early in the day
- 3
Stop overhead sprinkler irrigation and switch to drip watering
- 4
Space rows widely to improve air circulation
- 5
Sow carrot seed in raised ridges to reduce foliage wetness
Keep alternaria blight off this Vegetable Garden
Plant clean, disease-free seed. Choose resistant varieties when available. Practice 3-year crop rotation by plant family. Remove and discard diseased crop debris after harvest.