Pests & Diseases


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

Black Spot

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

Fall Webworm

This native insect found throughout North America feeds on at least 88 species of deciduous trees, from apple to willow.

Brown Soft Scale

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

Meadow and Pine Vole

BIOLOGY: Voles, also known as meadow or field mice, have stocky, furry bodies, short legs, and short tails. There are 23 species of voles in the United States, but the two of greatest consequence to gardeners are the meadow and …

Cabbage Maggot

Introduced from Europe, the cabbage maggot (Delia radicum, formerly Hylemya brassicae) is a serious pest of vegetable gardens in the northern United States and Canada. The fly primarily feeds on crucifers such as cabbage, cauliflower, broccoli, brussels sprouts, collards, kale, …

Wild Garlic

The garlic aroma of crushed or mowed leaves readily identifies this introduced weed.

Black Vine Weevil

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.