n any of several diseases of pines caused by rust fungi of the genus Cronartium and marked by destructive invasion of bark and sapwood and producing blisters externally
n fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host
N. Colorado trees to be sprayed for pine beetles The U.S. Forest Service plans to spray nearly 8,000 trees in northern Colorado to protect them against the spread of pine beetles and white pine blister rust.
March 24, 2014 - KMGH 7 Denver
Forest Service to spray NoCo trees for beetles The U.S. Forest Service will spray nearly 8,000 trees in the Arapaho and Roosevelt National Forests this spring to protect the Northern Colorado trees against spread of pine beetle and white pine blister rust, according to a news release.
March 21, 2014 - The Fort Collins Coloradoan