Hemlock Tree – White Things At Base
![hemlock adelgid 3 | Walter Reeves: The Georgia Gardener hemlock adelgid](https://t9e4s3i5.rocketcdn.me/wp-content/uploads/2020/03/hemlock-adelgid-3-600x398.jpg)
Q: We have a ten-year-old hemlock tree. We noticed a few tiny white things at the base of the needles on some branches but not that many. I’m worried these could be hemlock woolly adelgid. The temperature got down to 1° F this past Christmas eve. Would that have killed any insects on the tree?
A: Like all living things, hemlock woolly adelgid can be killed by cold temperatures. A high percentage of these sucking insects will die when temperatures drop to -4° F, but some will survive. These individuals will be the basis of a big population surge in spring. I have details on how to control adelgids here.