blue stem

noun

, Plant Pathology.

1. a disease of raspberries and blackberries, characterized by blue discoloration of the stem, wilting, and discoloration and decay of the roots, caused by a fungus, Verticillium alboatrum.

Example Sentences

Native grasses like blue stem returned on their own from old seeds in the soil.

From Washington Times

Atlantic white cedars grow among little blue stem, American holly and the eastern prickly pear- the only cactus native to the Northeast.

From Washington Times

The refuge manager for Rocky Flats National Wildlife Refuge is searching for the old dirt road that has disappeared under a sea of big blue stem and prairie sand reed.

From Washington Times

Now, the company is beginning the process of planting warm season grasses, big blue stem and switch grasses, which are native to this area.

From Washington Times

Sandplain gerardia quickly gets lost among Long Island’s heartier coastal grasses — all that Indian grass and big blue stem waving from along Montauk Highway.

From New York Times