crown gall

noun

, Plant Pathology.

1. a disease of peaches, apples, roses, grapes, etc., characterized by the formation of galls on the roots or stems usually at or below ground level, caused by a bacterium, Agrobacterium tumefaciens.
2. the gall itself.

Word History and Origins

Origin of crown gall¹

First recorded in 1895–1900

Example Sentences

Finally, refuse to accept any raspberry or blackberry plants showing crown gall on roots or crowns.

From Project Gutenberg

The raspberry is a common carrier of crown-gall and should not be planted as an inter-crop in a peach-orchard.

From Project Gutenberg

In common with all tree-fruits, the peach is attacked by crown-gall (Bacterium tumefaciens Smith and Townsend).

From Project Gutenberg