See All Pest, Disease and Weed Identification
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ArticlesEmerald Ash Borer
Emerald Ash Borer (EAB) is a destructive, introduced insect of North American ash trees. It has been the cause of widespread ash tree decline and mortality throughout northeastern North America. -
ArticlesIPM in Mushroom Production: Exclusion Techniques for Pest Control
Exclusion prevents the entrance of pest organisms into new rooms and their escape from older ones. The latter should not be underestimated. -
Conferences$10.00
Crops Conference
When 02/03/2026Length 6 hours, 30 minutesEvent Format In-PersonRecap the 2025 crop production season, discover agronomic innovations, and earn valuable certification credits. Attendees gain expert insights, network with industry leaders, and enjoy a buffet lunch. -
VideosExplorando e Identificando Enfermedades en Tomates
Length 8:37Este video revisa los fundamentos de la exploración adecuada y la identificación de enfermedades comunes y sus sÃntomas. -
ArticlesBeneficial Insects Can Help the Garden Flourish
Flies in the family Syrphidae are helpful allies in the garden and in the greenhouse or nursery. -
ArticlesMethods to Control Varroa Mites: An Integrated Pest Management Approach
Varroa mites (Varroa destructor), are the most influential of all of the pests and diseases of the European honey bee (Apis mellifera) today. -
ArticlesBull Thistle Identification and Management
Bull thistle (Cirsium vulgare) is a biennial that, true to its name, has notable spines. This plant is much different than Canada thistle. -
ArticlesGround and Tiger Beetles (Coleoptera: Carabidae)
Ground and tiger beetles are important biological control agents in agroecosystems. They consume many soil dwelling insect pests. -
ArticlesSpiders Commonly Encountered in Pennsylvania and the Northeast
Spiders are beneficial animals that feed on arthropods, including insects. Spiders rarely bite people, and most species found in the world are harmless. -
ArticlesAttracting Beneficial Insects
There are numerous insects that can be considered "beneficial." -
ArticlesI'm Not Dead, Just Dormant!
My neighbor came up to me last month and told me he was sorry that my tree had died. I was puzzled, because I was not aware that any of my trees had died. -
ArticlesStay Alert for Oak Wilt!
Oak wilt is not known east of the Susquehanna River in Pennsylvania. In 2021, there was a suspected case on the border of Chester and Delaware counties that has since been discredited. -
ArticlesSurvival of Staphylococcus Aureus on Synthetic Turf
Staphylococcus aureus is a common bacterium, but is capable of causing diseases ranging from minor soft tissue infections and food poisoning to serious medical problems such as toxic shock syndrome. -
ArticlesWild Onion and Wild Garlic
Wild onion (Allium canadense) and wild garlic (Allium vineale) are perennial plants that can be a weed in turfgrass and landscape beds. -
ArticlesYellow Woodsorrel
Yellow woodsorrel (Oxalis stricta) has foliage (composed of three leaflets) that resembles white clover or black medic. -
ArticlesOrchard IPM - European Red Mite Biological Control
Infestations of red mites can result in smaller fruit and a reduced fruit bloom the following season. -
ArticlesAutumn Olive
Autumn olive (Elaeagnus umbellata) is an invasive shrub. This article includes images for identification and recommendations for control. -
ArticlesPurple Loosestrife – A Noxious Weed
Purple loosestrife may be beautiful in the garden, but the potential degradation of our wetlands because of this invasive plant is grand. -
ArticlesPoison Hemlock
Poison hemlock (Conium maculatum) appears to have become more abundant over the past few years. -
ArticlesOrchardgrass and Quackgrass
A number of grass species appear in lawns and ornamental beds and are considered weeds. -
ArticlesMulberry Weed
A weed that has been spreading in recent years in the nursery and landscape trade is mulberry weed.







