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 Photo: P. Landschoot, Penn State
May 26, 2017

On May 22, 2017, I received a call from a golf course superintendent in central PA about a disease that was producing yellow circular patches on his annual bluegrass greens.

Aerial image of Penn State’s research hopyard at Rock Springs. Photo by T. Delvalle, Penn State
May 16, 2017

You probably have heard of (or observed) the use of small unmanned aircraft systems (sUAS) throughout the country; whether it be for fun, a hobby, for capturing great aerial pictures, or commercial use.

Four-lined plant bug adult. Photo: S. Feather, Penn State
May 4, 2017

Four-lined plant bugs, Poecilocapsus lineatus, become active in May. They are one of the few pests that injure a wide variety of plants, including herbs that are rarely bothered by anything else.

Altenanthera spp. Photo: T. Ford, Penn State
May 2, 2017

Elevated sodium and elevated chloride levels are being observed more frequently in private water supplies in rural areas.

Spotted lanternfly nymph. Photo: E. Swackhamer, Penn State
May 2, 2017

Erica Myers, a Penn State Department of Entomology graduate student, observed the first 2017 sighting of a Spotted Lanternfly, Lycorma delicatula, nymph in Oley, PA (Berks County) on April 26, 2017.

Black walnut fruit. Photo: K. Salisbury, Penn State
May 2, 2017

Black walnut is one of the last trees to leaf out in the spring and one of the first to lose its leaves in the fall.

May 2, 2017

Plant cell wall growth is typically described as a simple process, but researchers using a microscope that can resolve images on the nanoscale level have observed something more complex.

Horseweed. Photo: Bill Curran, Penn State
May 2, 2017

Horseweed (Conyza canadensis) also known as marestail, reproduces by seeds.

Tobacco Mosaic Virus on petunia. Photo: T. Ford, Penn State
May 2, 2017

The most important way that Tobacco Mosaic Virus (TMV) can be spread from plant to plant is on workers' hands, clothing or on tools. This is called 'mechanical' transmission.

Photo: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org, Japanese barberry, Berberis thunbergii, Infestation
April 3, 2017

Japanese barberry (Berberis thunbergii) is an invasive, non-native woody plant that can grow 3 to 6 feet tall with a similar width.

Spotted lanternfly egg masses. Photo: Emelie Swackhamer
March 15, 2017

People can reduce the populations of spotted lanternfly on their properties by killing the overwintering eggs.

Keeping greenhouses free of weeds helps control diseases and insect pests.
March 8, 2017

"Don't let weeds grow in the greenhouse." Growers know it, customers sense it, researchers understand it, and Extension educators preach it. But is zero tolerance for weeds an attainable goal?

Photo: Chris Evans, University of Illinois, Bugwood.org, Queen Anne's lace, wild carrot, Daucus carota
February 2, 2017

Wild carrot or Queen Anne’s lace (Daucus carota) is a biennial.

Calonectria pseudonaviculata spores. Photo courtesy Margery Daughtrey, Cornell University
January 27, 2017

Boxwood blight (BB) continues to spread throughout the US. The University of Illinois Plant Clinic recently announced its presence in Illinois.

Epinasty is the increased growth of the upper surface of a plant part, such as a leaf, resulting in a downward bending of the part. Photo: Tom Ford
January 20, 2017

Growers looking to high efficiency vent-free heaters for their greenhouse operation may be disappointed in their performance when growing ethylene sensitive crops like tomatoes.

Evergreens near a high use roadway are wrapped with burlap to give some protection from damaging salt spray.
January 19, 2017

Evergreens provide year long interest in the landscape and are normally pretty hardy during the winter months.

January 19, 2017

The Horticultural Research Institute, the research foundation of AmericanHort, is pleased to announce the release of Best Management Practices (BMPs) for Bee Health in the Horticultural Industry.

Early leaf striping symptoms of beech leaf disease. Photo by John Pogacnik, Biologist, Lake Metroparks
December 28, 2016

Beech Leaf Disease joins the non-native beech scale and its associated beech bark disease (Nectria spp.) as another fatal blow to our native Fagus grandifolia.

Female spotted lanternfly and her egg mass. Photo: Emelie Swackhamer
November 28, 2016

More than 300 people attended an update meeting about the invasive insect, the spotted lanternfly, on October 27, 2016 in Bally, PA.