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How to Manage Pests

Pests in Gardens and Landscapes

Alternaria blight—Alternaria spp.

Alternaria blight is a disease on carnation. It causes tan spots or blotches with purple margins to occur on leaves, flowers, or stems. Lesions may be around the stem base.

Solutions

Use good sanitation. Remove infected plants and debris. Avoid overhead irrigation. Water in the morning so that plants dry quickly.

Alternaria leafspot lesions
 Alternaria leafspot lesion

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