Taphrina pruni being larger than the healthy one. As a fungus, cool and wet weather conditions promote the germination of spores, whilst warm and dry weather results in infection rarely taking place. Colonisation can become extensive and eradication very difficult. The disease can to some degree be controlled by carefully removing infected branches, witch's brooms and fruit before the infective air borne spores are produced. Applications of copper-containing fungicides have a degree of control over the fungus. Taphrina pruni Taphrina pruni is a fungal plant pathogen of blackthorn (Prunus spinosa) that causes the Pocket or bladder Plum gall, a chemically induced distortion
Prunus virginiana the chokecherry the official fruit of the state of North Dakota, in part because its remains have been found at more archeological sites in the Dakotas than anywhere else. Chokecherry is also used to craft wine in the western United States mainly in the Dakotas and Utah as well as in Manitoba, Canada. Prunus virginiana Prunus virginiana, commonly called bitter-berry, chokecherry, Virginia bird cherry and western chokecherry (also black chokecherry for "P. virginiana" var. "demissa"), is a species of bird cherry ("Prunus" subgenus "Padus") native to North America; the natural historic range of "P. virginiana" includes most of Canada (including