You're out walking through your garden after a heavy rainstorm. Suddenly, you spot it: a bright, gelatinous, neon-orange blob clinging to the bark of your beloved maple tree. It looks like an alien ...

ST. LOUIS — Hikers out among Missouri's trees will soon begin to notice an orange goo encroaching on trunks and even dripping from branches, according to the Missouri Department of Conservation.

Don't panic if you see spots on your tree's leaves or something strange on the bark. Get to work diagnosing the problem with this guide that features pictures of common tree diseases and pests that ...

Diseases are among the major causes of tree mortality in both forests and urban areas. New diseases are continually being introduced, and pathogens are continually jumping to new hosts, threatening ...