See All Pest, Disease and Weed Identification

Get the answers to the most frequently asked questions about spotted lanternfly, including their damage to plants, how to manage them on your property, and what you can do to help!

Untested homemade solutions may harm people, pets, and plants. Their use can be unsafe and illegal.

Ragged robin (Silene flos-cuculi) is often grown as an ornamental in the U.S. However, emerging evidence indicates that this species poses a greater invasive threat than previously thought.

Nectria twig blight, caused by the fungus Nectria cinnabarina, is a minor disease that breaks out occasionally.

En este corto video, usted aprenderá principios básicos de exploración para enfermedades comunes en huertos – sarna o roña de la manzana - algunas plagas de ácaros y organismos benéficos.

Leaf blight and fruit spot are caused by the fungus Fabraea maculata, which infects the leaves, fruit, and shoots of pear and quince and the leaves of apple trees.

Informational table showing apple varieties that are non-resistant to apple scab but recommended for home planting in Pennsylvania.

Supplement for green industry professionals and natural resource managers on the spotted lanternfly and effective management strategies.

The potato leafhopper is the most destructive insect to alfalfa in Pennsylvania, causing average annual losses of approximately $15 million.

Information about locating, identifying, and treating egg masses.

Introductory webinar explores invasive insects, their spread, and impacts on agriculture and ecosystems, plus early detection and prevention steps for volunteers, professionals, and the public.

Explore the benefits and challenges of the multicolored Asian lady beetle and learn how this introduced species impacts homes, vineyards, and native ecosystems.

Los céspedes domésticos en determinadas áreas de Pensilvania a menudo están sujetos a daños graves y extensos causados por las larvas del escarabajo verde de junio.

The Asian Longhorned tick is a recent invasive tick to Pennsylvania. This tick can be found on wildlife and on livestock. It is important to be aware of the presence of this tick and to implement prevention and control measures when necessary.

Flies are a nuisance on poultry facilities and can transmit diseases. Learn how to use integrated pest management (IPM) to control pest flies safely and effectively.

Learn how to identify and manage crape myrtle bark scale (CMBS) and explore sustainable strategies to reduce the impact of this emerging invasive pest.

The armored obscure scale is a key pest of oak in Pennsylvania, and can attack other woody host plants such as beech, dogwood, hickory, maple, and willow.

The pavement ant is a common house-infesting ant. These ants were likely introduced to the United States by merchant vessel cargo during the 1700s to 1800s.

The most common host plants of Cooley spruce gall adelgid are Colorado blue spruce and Douglas-fir that are grown as landscape ornamentals and Christmas trees.

Both Tinea pellionella, casemaking clothes moth, and Tineola bisselliella, webbing clothes moth, feed on animal by-products such as fur and wool.

People who complain about bumble bees flying about under their homes' eaves are probably being annoyed by carpenter bees (Xylocopa virginica).

The citronella ants get their name from the lemon verbena or citronella odor they emit when threatened.

The old house borer is an injurious wood-boring insect. The larva bores through pine, spruce, and other coniferous woods, weakening structural timbers.

Cereal leaf beetle is an occasionally severe pest of wheat and oats in Pennsylvania, but it also feeds on barley, rye, and other grasses.

Home lawns in select areas of Pennsylvania often are subject to severe and extensive injury from green June beetle grubs.