Pesticide Safety Education

The Balsam gall midge (Paradiplosis tumifex), also known as the Balsam fir needle gallmaker, causes damage to balsam fir Christmas trees in many areas...

Carpenter ants (Camponotus spp.), along with termites, are the most troublesome structural pest in New Hampshire. Four species live in the state, thre...

The spongy moth (Lymantria dispar) is an important defoliating insect of hardwoods in New Hampshire. A native of Europe and Asia, the spongy moth was ...

The boxelder bug, Boisea trivittata, feeds primarily on pistillate (female) and seed bearing boxelder trees by sucking sap from leaves, tender twigs, ...

Dutch elm disease is caused by two closely related fungi, Ophiostoma ulmi or O. novo-ulmi. The fungi are spread from tree to tree by elm bark beetles ...

A number of sawfly species are important defoliating pests of ornamental trees in New Hampshire. The damage is done by the larvae which are caterpilla...

The fall webworm (Hyphantria cunea) and the Eastern tent caterpillar (Malacosoma americanum) feed on fruit, shade, and woodland trees. They are of lit...

In appearance, scales in general show little resemblance to typical insects. They are well protected by the waxy, almost impermeable shell they live u...

Most spruce trees are damaged by one of two species of adelgids: the Eastern spruce gall adelgid (Adelges abietis) and the Cooley spruce gall adelgid ...

Powdery mildew occurs most commonly on the cool-season grasses such as bluegrasses and fescues, especially in shaded areas or areas with poor air circ...