Mustard Greens
Symptom Cause  
Small, yellow spots, old leaves; spots enlarge, black growth
Alternaria Leaf Spot
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Leaves wrinkled or curled; discolored, stunted, tend to fall off
Aphids
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Plants become stunted, leaves yellow/roll; stem base develops brown, rotted areas on the inside; inside of tubers shows darkened blotches/soft rot that worsens
Black Leg
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Young plant yellows, browns, dies; lower leaves wilt, die
Black Rot
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Holes in leaves
Diamondback Moth Caterpillar
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White powder on leaf undersides; foliage wilts
Downy Mildew
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Tiny, black hopping insect, shot holes in foliage
Flea Beetles
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Tan, bleached spots, distortion on plants; flowers, fruit, drop
Harlequin Bugs
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Plant "bolts" (fast, vertical growth) and goes to seed
Hot Weather
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Leaves are skeletonized
Mexican Bean Beetles
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Soft, watery spots on stems, leaves or fruit; enlarge, mold forms
Mold (soft rot)
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Brown gray warts on leaves
Oedema
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Holes chewed from outside to middle of leaves
Vegetable Weevil
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