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 ...

Q. Our young navel orange tree has a tall sprout coming up the middle. This is the first year the sprout has grown leaves; before it was just thorns. Should this sprout be cut off? This year’s crop of ...