Based on ponderosa pine in open, multi-aged stands. The first symptom of dwarf mistletoe infection is a slight swelling of the bark at the infection site. Witches' brooms take years to form. They slowly take more and more food from uninfected parts of the tree. This reduces vigor and causes premature death.
Shoots form two to three years after infection.
Management Dwarf mistletoes are not quick killers, so long-term management options are feasible. Pruning and Tree Removal Pruning and removing trees is the best management measure available to reduce or eliminate dwarf mistletoe infestations in ornamental trees or urban forests. Trees with high, unreachable mistletoe infections will continue to shower seeds on nearby trees if not cut down. Prune and remove a few heavily infected trees and keep a green forest on the property. Prune off all infected branches for healthier trees.