---- Olin Miller <> wrote:
Sorry about the mixup.
For a Watering schedule for Desert Trees, see the Desert Botanical Garden
watering guide at
and select “Watering Desert Trees and Shrubs”.
As to your fertilizer question, Palo Verde trees are drought-tolerant legumes
that transform atmospheric nitrogen into a form that can be used by plants. By
fixing nitrogen, these trees make nutrients readily available often lacking in
desert soils such that supplemental fertilization is seldom necessary.
As to controlling the beetle, from:
“Currently there is little that can be done to control these beetles. They
attack stressed trees, so the best prevention is to keep trees as healthy as
possible. Turn off outside lights to avoid attracting the adults. Placing
pesticides in the exit holes does little good as the beetle is already gone. A
better strategy is to focus on improving the health of the tree to help it
outgrow the damage by providing adequate water and fertilizer”.
Olin Miller, Master Gardener Volunteer
Maricopa County AZ
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