Pests & Diseases

Black Spot

Black spot is the most serious and widespread disease of roses, thriving wherever there is adequate humidity and rainfall.

Fairy Ring Fungi

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.

Blossom End Rot

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 …

Eastern Mole

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.

Asian Lady Beetle

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.

Citrus Mealybug

The citrus mealybug (Planococcus citri) is a major greenhouse and houseplant pest. In subtropical climates, this sucking insect is also a problem outdoors.

Damping-Off Fungi

Damping-off is the infection of young seedlings by a variety of different fungi, most often species of Rhizoctonia, Pythium, and Fusarium.