Read on to learn more about tomato pests andhow to prevent pestsfrom ruining your tomato harvest.

Pests vs.

Beneficial Insects

Not all insects on your plants are tomato pests.

Closeup of tomato plant with powdery mildew

andriano_cz / Getty Images

Before you proceed with pest control treatments, ensure what you’re controlling is indeed a tomato pest.

Pest control measures also depend on population numbers and the scope of the damage.

Want more gardening tips?

Black cutworm larva (Agrotis ipsilon)

Black cutworm larva (Agrotis ipsilon)MEDITERRANEAN / Getty Images

They can be present on tomato plants during the entire growing season.

The caterpillars are mostly light green with tan, brown, or maroon splotches on their bodies.

The female moths lay their eggs on tomato plants.

Tomato hornworm

DPFishCo / Getty Images

They overwinter in leaf litter and wooded areas and resurface in the spring.

The 12- to 2/3-inch bugs are brown or green in color.

The caterpillars overwinter in warm climates and move north in the summer.

Aphids

Liz W Grogan / Getty Images

Some will be more prevalent than others depending on the other plants in your garden and your local climate.

University of Minnesota Extension.

Management of Insect Pests on Fresh Market Tomatoes.

Spider mites

jess311 / Getty Images

University of Minnesota Extension.

Thrips Injury - Tomato Foliage.

University of Massachusetts Amherst.

Tomato fruit worm

Anas Yousaf / Getty Images

Organic Management Recommendations for Colorado Potato Beetle.

University of Minnesota Extension.

Silverleaf Whitefly on Tomato.

Flea beetle

amriphoto / Getty Images

Tospovirus in tomato, transmitted by thrips

Tospovirus in tomato, transmitted by thripsburapa / Getty Images

Leafminer

sebasb95 / Getty Images

Colorado potato beetle

vovashevchuk / Getty Images

Stink bug

ibunt / Getty Images

Silverleaf whitefly (Bemisia tabaci)

Silverleaf whitefly (Bemisia tabaci)Tomasz Klejdysz / Getty Images

Yellow-striped armyworm (Spodoptera ornithogalli)

John Brandauer/Flickr/CC BY-NC-ND 2.0 DEED