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 ...

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 ...

Alias: The pear leaf blister mite, or pear rust mite. This is such a small pest that it is almost pointless to describe the physical characteristics. It is a small (too small to see with the naked eye ...

Pear rust is an extremely common pear problem that affects both ornamental and fruiting pear trees. The disease is called cedar-hawthorn rust and often causes only aesthetic damage in the form of 1/8- ...

Last year my Bradford pear’s leaves were covered with rust fungus. What can I do this year to prevent that from happening again? CS You are correct. It seems like rust disease was everywhere last ...

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 caused by pear rust, which has become more common recently. If the leaves were not too badly affected, your crop of pears should not have been diminished by this unsightly fungal problem. To ...

DEAR JESSICA: Every October, I pick and save seeds from my morning glory pods. (I do leave some on the plants.) Coming back from Florida late this year, I didn’t sow until the third week in May. They ...

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.