The latest weapon in the war between arbocuture and insects is a different gun rather than a better bullet.
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The injection process delivers the goods directly to the cambium layer through holes drilled at the base of the trunk.
The largest advantage is, “The medicine goes directly in the tree and stays there,” said Arborist Chad Dykstra, of Foothill Tree Company in Placerville. “There’s no chemical trespass.”
Injection protocols are still evolving in arboculture, but increasing concern over the effect of even the most benign insecticide on bee colonies will likely drive the move fto injection, he added.
Injection kits for homeowner use are available at local garden centers.