Under the Microscope
Diamondback moth Plutella xylostella
This caterpillar is a dangerous defoliator.
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Pine shoot beetle (Tomicus piniperda)
This burrowing beetle is a menace to pines.
Spongy moth (Lymantria dispar)
The larval stage of the spongy moth is a prolific feeder, ravaging more than 450 species of plants.
Downy mildew
Control your humidity to prevent this pathogen from infecting your crops.
Brown marmorated stink bug
This invasive pest is not a picky eater, but enjoys high-value trees.
Aphids
Aphids are a common problem in the nursery or greenhouse. They can be easy to control, but before you treat, make sure Mother Nature has not already taken care of the problem for you.
Foliar nematodes
These microscopic worms have broad host ranges and are capable of infecting hundreds of species of plants, including woodies and perennials.
Birch leafminer
These insects feed on birch leaves, giving the trees a diseased appearance.
Tipping the scale
Determine what type of scale insect you have because the two types require different methods of control.
Thrips
If you’re growing under cover, monitor closely for Western flower thrips or face the possibility of major plant losses.
Ambrosia beetles
These tiny pests are difficult to detect until they’ve bored into host trees and shrubs.
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