How pruning an oak tree at the right time can head off a deadly new disease
A deadly new oak-tree disease can be prevented by pruning them in the dormant season (if needed) instead of spring or summer.
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Signs of deadly tree-killing beetle discovered in San Mateo County’s Redwood Shores
The fungus is the beetles’ food source. The borers have been known to attack 66 different tree species in California, including avocado, cottonwood, sycamore and oak. The beetles leave perfectly round ...