Answer: It sounds from your description like your trees have been infected by a disease--the "sponge-like" things you see are the fruiting bodies, or reproductive structures, of the fungus. It's hard to say exactly what the disease is without knowing what type of evergreen you have. For example, if you have cedars, it may be cedar-apple rust. Signs of this disease include orangish galls on the branches, which become quite gelatinous when wet. Your local nursery may be able to help you identify both the type of evergreen and the disease. Or you can try your county Extension agent (ph# 708/653-4114). Both should be able to help you with instructions for care, once you have identified the species of tree.
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