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 ...
DEAR GARDEN COACH: Help! I recently discovered these crazy looking things on the leaves of my valley oak tree. I am wondering what is wrong, and what can I do to get rid of them? I know the tree is ...
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