Insect pests can wreak havoc with trees. And what makes tree problems caused by insects especially difficult to cope with is that, sometimes, the pests we detect on a tree aren't the ones causing the problem. Below I present a sampling of Q&As dedicated to this topic:
Speaking of deadly attacks on trees from insect pests, certain beetles can spell major problems for your specimen trees. As I explain in the FAQ linked to above, proper tree care in this case demands good timing and a belief that neatness counts.
Scale insects are among the oddest looking insects you'll ever see. Click the link to this FAQ to learn how to control magnolia scale.
Insects may be the culprits here. Consult this FAQ to find out which insects would be the "usual suspects" -- and how to control them.
As you'll see in the answer to this tree problem question, it all depends on the nature of those "little holes." In one scenario, you don't have to worry about the culprit; in another, the culprit is an insect pest about which you very much need to worry.
If your tree is struggling and has insects on it, you can't just assume that those particular insects are at the root of the problem. Here's a case where insects (ants) and sooty mold are effects, rather than the cause of a problem.
My tree care FAQ continues on Page 3....