White pine blister rust (caused by the fungus Cronartium ribicola J. C. Fisch. ex Rabenh.) was introduced into the United States about 1900 and has since spread throughout the range of white pine. The

White pine blister rust is the most serious disease of white pine in Maine. Its most commonly observed symptom is the presence of cankered (dead and sunken) areas on tree trunks and branches. Pitch co

Maloy, O.C.. 2003. White pine blister rust. The Plant Health Instructor. DOI:10.1094/PHI-I-2003-0908-01 Updated 2008. DISEASE: White pine blister rust PATHOGEN: Cronartium ribicola (Peridermium

Currant and gooseberry plants (the genus Ribes) cannot be legally imported into, or grown in, North Carolina because they serve as alternate hosts to the plant disease known as white pine blister rust

Hosts: Western white pine, whitebark pine Quick ID: Branch flagging Swellings and blisters on branches; also on trunk of small trees Diamond-shaped cankers on trunks Cankers with greenish-