Every spring across Europe, billions of oak leafroller moth caterpillars hatch on oak branches and immediately start chewing.
A close-up of an oak leaf with bumps, or galls, from the gall wasp, Photo courtesy Getty Images. Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert ...
In late April, across the oak forests of northern Bavaria, millions of spongy moth caterpillars hatch from egg masses glued ...
Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...