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The grey patches are likely lichen, a combination of a fungus and an algae. It is harmless to you and the tree. It is common ...
21hon MSN
More than 500 native plants in San Diego County are held in a Native Seed Bank at the zoo. Those seeds are dried down to a ...
You can also help by learning the symptoms of rapid ʻōhiʻa death — sudden browning, wilting and dieback — as well as ...
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