Some of us are starting to notice yellow-orange spots on the leaves of their ornamental or fruiting pear trees. These spots begin in the late spring on the upper surface of leaves, approximately 1/8 ...

During the summer, many of us notice yellow-orange spots on the leaves of their ornamental pear trees. These spots begin in the late spring on the upper surface of leaves, approximately 1/8- to ...

ROCKVILLE CENTRE, N.Y. (CBSNewYork)-- Trees are under attack by a hard-to-control fungus that's been making the rounds, wiping out beautiful street and backyard pear trees across the area. "You can ...

After 20 years, suddenly our ornamental pear trees (not Bradford but “Aristocrat”) are dropping leaves with red and black spots. What can we do? This is a new rust disease called pear trellis rust.

DEAR JESSICA: I have a question about your column of Aug. 19, where you mention that the fungus that causes rust disease can be cured by getting rid of junipers, which host the fungus. I have two ...

DEAR JESSICA: We have a beautiful weeping cherry on our front lawn, but its leaves are dropping, brown and curled. My husband found some pinkish/reddish “gunk” on a part of the tree, scraped it off ...

Fall is here and all of those end-of-season projects are looming. If you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service.

The orange rust on pear leaves won’t hurt the tree. The fruit of the serviceberry is popular with birds, and humans can eat it, too. It’s excellent in jams, jellies and pies. Swamp milkweed attracts ...

This is a plant disease topic we usually talk about later in the season, but with the warm weather we have been having, it’s likely that rust season will start a little earlier this year. And when we ...

Dear Neil: What would be causing the slow death of our dwarf gardenias? These green leaves on the left and yellowed leaves on the right are both on the same plant. We have two other plants on either ...

Any good gardener is constantly on the lookout for signs of disease threatening their prized plants. But with so many diseases threatening to strike, it can be difficult knowing what to watch for.