Bagworm: The larvae feed on some 120 species of woody ornamentals-deciduous shrubs and trees as welt as conifers. Read Article
Black spot is the most serious and widespread disease of roses, thriving wherever there is adequate humidity and rainfall. Read Article
This native insect found throughout North America feeds on at least 88 species of deciduous trees, from apple to willow. Read Article
The greenhouse whitefly is one of the most common houseplant pests. Read Article
This common scale attacks a wide range of houseplants, including anthuriums, citrus, dieffenbachia, ferns, orchids and ornamental figs. Read Article
Introduced from Europe, the black vine weevil (Otiorhynchus sulcatus) is a widespread pest in the northern half of the United States, where it attacks a wide variety of landscape shrubs, especially evergreens such as rhododendrons, hemlocks, and yews.
The sudden appearance of mushrooms on the lawn can sometimes seem magical, especially when they are arranged in a circle. These so-called fairy rings may be a foot in diameter or 100 feet across. They typically enclose darker green grass.
This common affliction of tomatoes is the result of a physiological disorder rather than a disease. First described over a century ago, blossom end rot is linked to low levels of calcium in the young fruits as well as to … Read Article
The eastern mole (Scalopus aquaticus) can be found from Ontario to Florida. Of the seven species of moles present in the United States, it is the most widespread, and the one that is most likely to disrupt lawns and landscapes with its tunneling. Read Article
Also known as the Halloween lady beetle or Japanese lady beetle, the multicolored Asian lady beetle (Harmonia axyridis) was introduced to the United States in 1916 as a biological control for aphids and scale insects.
The citrus mealybug (Planococcus citri) is a major greenhouse and houseplant pest. In subtropical climates, this sucking insect is also a problem outdoors. Read Article