Marjoram
Symptom Cause  
Leaves wrinkled or curled; discolored, stunted, tend to fall off
Aphids
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Rotting of older leaves
Botrytis
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Young plant falls over at soil line and dies
Damping-Off
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Gradual wilting of plants
Rhizoctonia
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Leaves stippled, yellowing or bronze; dry out and drop may be webbing visible; sometimes galls form on leaves
Spider Mites
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