Master Gardener Decision Support Guide
Woody Ornamentals
Rhododendron
The growth you have described on the limbs are probably lichens.
Even though the lichens grow better on weak and dying branches,
they do not harm the plant. No control is necessary for the
lichens. If there are weak and dying branches, a sample will be
necessary to determine the cause.
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Rhododendron,
Woody Ornamentals,
Master Gardener Decision Support Guide
Designed by David
Goforth on Dec 17, 1997.
Contents modified on February 20, 1998.
Contents checked on February 20, 1998.