fungus or insect on (potted) dwarf pine tree

Asked June 1, 2019, 1:32 PM EDT

Can anyone help me diagnose what my dwarf pine tree has. It just started growing within the last week or so and I'd like to stop it from spreading to the other trees.

District of Columbia

1 Response

This looks like pine woolly aphid:

You can manually pick apart the woolly masses and then spray with a strong blast of water.