Chickweed Dallisgrass Goose Grass Henbit Oxalis Spurge

Introduction to Horticulture Pest ID Study Guide Crabgrass

Chickweed

Dallisgrass

Goose Grass Introduction to Horticulture Pest ID Study Guide

Henbit

Oxalis

Spurge

White Clover Introduction to Horticulture Pest ID Study Guide Wild Garlic

Yellow Nutsedge- stems will be triangular

Black Spot- black spots on leaves, typically on roses

Chlorosis- yellowed leaves all over, indicates lack of nitrogen/iron

Damping off- looks like really small spider-webs on plants, especially seedlings

Fireblight- leaves (usually edges first) will look like they have been slightly burned, may also see black/brown spots on the leaves. Introduction to Horticulture Pest ID Study Guide

Powdery Mildew- typical on cucumbers, etc it looks like baby powder on the leaves, can also appear on grasses

Root Rot- look for roots that look swollen and wet. Also in a sample of grass you will see dead spots, usually no pattern. Also on potted plants the entire plant may be dead/dying and may often be falling over.

Rust- looks like rust on metal. Almost always brown-red in color, usually small splotches. Can be on leaves of almost any plant, especially apples or barberry.

Aphid- look like fleas, can be white, clear, brown, or green

Bagworms- in “cocoon” may look like a pine cone or leaves wrapped up. When they emerge they are basically ½” long black caterpillars.

Caterpillar- uhm…if you don’t know what a caterpillar looks like then I don’t know that I can help you out here…. Introduction to Horticulture Pest ID Study Guide Japanese Beetle

Lacebug- look like stinkbugs

Mealybugs- Typically white, probably will not see them moving. May appear as hard, raised bumps on the plants.

Scale- don’t look like insects at all. They look like raised brown or black raised bumps on stems and leaves of plants.

Spider Mites- black, brown, or red TINY bugs. They are almost too small to see with the naked eye. Look for small spider-web like structures on the plants.

Thrips- Flying insect that looks like a really tiny moth. Typically 1/16” long and very narrow.

White Fly- Flying white insect. Dead ones are white too.