White Fuzzy Spots on Your Pine Tree? It Could Be Adelgids
A pine trunk that looks dusted with snow in midsummer deserves a closer look. In this video, Tree Green’s Meaghan Mays shows what that white covering can actually be: a heavy population of adelgids.
Adelgids are small insects that feed on trees and produce a white, woolly covering. Different species affect different conifers, including white pine, hemlock, spruce, fir, and larch. A few fuzzy specks may be easy to miss; a severe infestation can make sections of a trunk or branches appear white.
What should you look for?
Check the trunk and branches for scattered white, cottony spots, especially if the tree also has needles that are turning pale, yellow, or brown. Thinning foliage and dying branches are further reasons to investigate. Damage may appear on part of a tree before it becomes widespread.
The trees in Meaghan’s video show why timing matters. One is being treated while much of its foliage is still green. Another has extensive dieback and is too far gone to save. Heavy, persistent adelgid feeding can weaken a tree, but the presence of a few insects does not mean it is beyond recovery.
What should you do if you find them?
Have the tree evaluated before deciding on treatment. The insect species, host tree, extent of damage, and time of year all affect the recommendation. White residue or discolored needles alone may not tell the whole story. Tree Green’s tree diagnosis service can help identify the cause, and you can learn more about its adelgid and other insect treatments.
If you’re concerned about a conifer in Chicago’s western suburbs, contact Tree Green for a free evaluation or call 630-668-4350. Catching a problem while the tree is still healthy enough to respond gives it the best chance.
