Extension > Garden > Diagnose a problem > What's wrong with my plant? > Vegetable > Peas > Spots on leaves
Peas > Leaves > Spots on leaves
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Aschochyta Leaf and Pod Blight
Aschochyta pisi
- Leaves and pods have circular tan spots with a dark border
- Center of the spot is often peppered with tiny black dots
- More information on managing diseases in the home vegetable garden
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Mycosphaerella Blight
Mycosphaerella pinodes and Phoma medicaginis var. pinodella
- Seedling stem turn dark brown to black, often near the soil line, seedlings may be killed or grow weakly
- Small dark flecks on stems, leaves and pods
- Leaf spots grow into round brown spots with several concentric rings like a bull's eye
- Purplish black lesions on stems
- More information on managing diseases in the home vegetable garden
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Bacterial Blight
Pseudomonas syringae pv. Pisi
- Leaf spots are first shiny dark green and water-soaked
- Older leaf spots are angular, papery brown, and may appear translucent
- Greasy green to gray spots or blotches develop on pods
- A sticky slime of bacterial ooze may form on leaf spots or surround the pea seeds when wet
- Severely infected plants may drop blossoms or young pods, turn brown, or die
- Disease is most severe when frequent rain or sprinkler irrigation are present
- More information on managing diseases in the home vegetable garden
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Powdery mildew
Erysiphe pisi
- Powdery white fungal growth forms spots on or completely coats leaves, stems and pods
- Small round orange to black fungal structures develop in white mats
- Pea seeds may be dull, gray brown and have a bitter taste
- Plants may be stunted
- Most common on late planted or late maturing plants
- More information on managing diseases in the home vegetable garden
