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The fungus Nectria invades wood damaged by freezing, hail, animals and insects.

Informational table showing disease name, symptoms, pathogen/cause, and management of Impatiens diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Zinnia diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Leucothoe diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Petunia diseases.

Viruses are submicroscopic entities capable of causing disease. They are a piece of nucleic acid (genetic material) surrounded by a protein coat.

Highlights the benefits of incorporating Pennsylvania native perennial plants into home gardens, offering guidance on selection, planting, and care, along with a list of recommended species.

Informational table showing disease name, symptoms, pathogen/cause, and management of Carnation (Dianthus) diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Cineraria diseases.

Two closely related viruses have been widespread and devastating in the greenhouse industry.

Informational table showing disease name, symptoms, pathogen/cause, and management of Hosta diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Delphinium diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Exacum diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Coreopsis diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Cordyline (Ti Plant) diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Calceolaria diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Amelanchier diseases. (Shadbush, Serviceberry)

Fungus-like organisms belonging to the genus Phytophthora are soil- or plant-borne and all are plant pathogens.

Thielaviopsis basicola (Berk. & Br.) Ferraris is a soil-inhabiting fungus that can cause root rot and branch dieback on a number of woody and herbaceous plants.

Deciding what to do about spotted lanternfly in your landscape depends on the level of risk to your plants and what works for you.

Jimsonweed is an annual plant that is poisonous to animals and humans.

Piccioni began on January 27, 2025

Considered a weed in turfgrass and landscape beds, common mallow is an interesting plant in that it can be an annual or biennial.

An informative guide designed to help users select and apply biological control agents to effectively manage insect and mite populations.

Landscapes not only supply ecosystem services such as aesthetics, wildlife habitats, pollinator support, but with a little knowledge and creativity will also support a variety of edibles. Landscaping professionals are uniquely positioned to help homeowners with design ideas and advice.