If you see black mold on a milkweed plant, you probably wonder if the plant is diseased or dying. Find out what is causing ...
If you notice a substance that looks like ash or soot on your trees, it's likely not the result of a fire. Instead, you're ...
Garden staff are finding more scale insects and aphids than in past years. A major infestation of lecanium scale was recently found on a large planting of bald cypress at the Garden. The population of ...