Pests & Diseases

The greenhouse whitefly is one of the most common houseplant pests.

This common scale attacks a wide range of houseplants, including anthuriums, citrus, dieffenbachia, ferns, orchids and ornamental figs.

This armored scale from Asia is a serious pest of euonymus throughout the United States and Canada.

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

Mexican bean beetle, a member of the ladybug family, attacks many kinds of beans—bush, pole, and lima—as well as cowpeas and soybeans.

This pest attacks indoor plants as well as outdoor plants during hot, dry summers.

The larvae feed on some 120 species of woody ornamentals-deciduous shrubs and trees as welt as conifers.

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