Marin Independent Journal: Oak leaves turning brown? Could be the two-horned oak gall wasp 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 ...
The leaves are down, winter is upon us, and that means it’s prime time for pruning oak trees, which can be infected by the oak wilt fungus if they’re pruned during the high-risk period mid-March ... Are you seeing brown, dry leaves on trees this spring? They may have been damaged by cold weather. “We didn’t get a hard freeze this spring, but we have had nights that got cold enough for frost,” ...
oak tree brown leaves, mlive: Michigan DNR warns against pruning oak trees from April 15 to July 15 Michigan DNR warns against pruning oak trees from April 15 to July 15 Penn Live: How pruning an oak tree at the right time can head off a deadly new disease Waiting until the leaves drop in fall is a rule of thumb for pruning shade trees, mainly because you can see bare limbs better, and the job is less “messy” without leaves attached to the cut branches.
