USDA Forest Service Forest Health Protection, Southern Region Mistletoe, caused by Phoradendron spp. Mistletoe is used in Christmas greens and can be found throughout the South. The impact of infestation is not normally severe, but the parasite may lower individual branch vigor. Where infestations are severe, tree decline may progress to the point where insect and fungus pests combine to kill trees. Identifying the Parasite.
Identification is easier in winter, when the host tree's leaves are absent.
The plant has opposite leaves and inconspicuous flowers that produce white to red berries in the fall. Identifying the Injury. A sticky substance on the seeds helps them adhere to susceptible young branches. Upon germination, a peglike root penetrates to the tree's, vascular system, extracting water and needed nutrients. If desired, tree branches may be pruned at least one foot back from the plant's attachment point, and then discarded.