DictionaryblightPlant disease
noun / verb

blight

BLYTE/blˈaɪt/

A destructive disease of plants.

Blight leaves dark lesions on the tomato plant's yellowing leaves.

A close view of a blighted tomato plant: irregular dark lesions spread across yellowing leaves, several leaves curl and collapse, and attached tomatoes show brown rot.
Etymology

Blight has no secure known ancestor. It first named a destructive influence on plants in gardeners’ and farmers’ speech, then extended to anything that withers hopes or checks prosperity.

In context

Pasa Sustainable Agriculture5:24
early blight and septoria leaf spot these are ones that tend to start on the lower parts of the plant and work their way up the plant and can lead to significant defoliation
IPM Perspectives: Vegetable Disease ID & Prevention with Dr. Beth Gugino

More examples

  • The disease blighted the entire crop.
  • Abandoned buildings are a blight on the neighborhood.
  • Years of conflict blighted their hopes for prosperity.

Forms

blight · blights · blighted · blighting

Similar words

disease
A broad disorder without necessarily rapid destructive effects.
scourge
A destructive influence rather than specifically a plant disease.