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Jimsonweed, Datura stramonium. Photo: Jan Samanek, Phytosanitary Administration, Bugwood.org
Toxic Weed in the Landscape: Jimsonweed - News News
Jimsonweed is an annual plant that is poisonous to animals and humans. More
Notice the size difference, Yellowjacket (bottom), European hornet (top). Photo courtesy of Jim Baker, North Carolina State University, Bugwood.org
The Giant Asian Hornet Scare - News News

The Giant Asian Hornet Scare

07/17/2018

There was a flurry of calls coming into area Penn State Extension offices a few weeks ago about the appearance of the giant Asian hornet. More
Photo credit: F.D. Richards CC BY-SA 2.0
Orienpet Lilies are Show-Stoppers in the Garden - Articles Articles
Orienpet, or OT, lilies combine the best characteristics of Oriental and trumpet lilies. This article discusses their care along with recommended cultivars and companions. More
Lacewings are close relatives of dobsonflies and fishflies, all found within the insect order Neuroptera, also known as the net-winged insects. Photo: Amy Korman, Penn State
Promoting Beneficial Insects in the Landscape: Lacewings - Articles Articles
Lacewings get their name from the intricate net-like arrangement of veins on their wings. With the arrival of spring, lacewings are much more active in our landscapes. More
Figure 1. Caterpillar or sawfly? Accurate identification of the pest is critical when using bio-insecticides. Bt products will control small caterpillars, but would be ineffective on the sawfly larva shown in this photo.
Bio-insecticides in Greenhouse Ornamentals - Articles Articles

Bio-insecticides in Greenhouse Ornamentals

Lee Stivers, Ruth Benner

Bio-pesticides, also known as biological pesticides, are defined by the US EPA as pesticides derived from natural materials such as animals, plants, bacteria, fungi, and certain minerals. More
A lotus flower form of a tree peony, 'Guardian of the Monastery', Photo credit: TJ Mrazik
The Beloved Peony - Articles Articles

The Beloved Peony

Thomas Mrazik

Peony flowers have richness unlike any others. Home gardeners can create an exquisite and long-lasting display by understanding the types of peonies available and the proper planting requirements. More
Image courtesy of wearebloom.org
BLOOM! A Movement to Improve the World Through the Power of Plants - News News
In response to rising plant blindness among American youth, a new campaign is inspiring young people to appreciate the plant world, and to see themselves engaged personally and professionally in that world. More
Photo: Alyssa Collins
Penn State Flower Trials Aid Industry, Consumers in Picking Posies - News News
The Penn State Flower Trials — in its 85th year — has a powerful benefit in Pennsylvania and beyond. Penn State's Southeast Agricultural Research and Extension Center in Manheim, Lancaster County, serves as the epicenter of the trials. More
An African Marigold being grown at the proper pH. Photo: Tom Ford, Penn State
Milk is Not a Substitute for Flowable Lime Rescue Treatments - News News
Low media pH has been known to increase the risk of iron and manganese toxicity in some horticultural crops like geraniums and African marigolds. More
The Basics of Bio Control of Insects for Greenhouses and Nurseries
The Basics of Bio Control of Insects for Greenhouses and Nurseries - Videos Videos
Bio control of insects in greenhouses and nurseries is a pest management strategy that is increasing in use and application. This video covers some of the bio control agents (BCA's) that are being used in horticultural applications. More
Thrips larvae. Photo: Sinclair Adam, Penn State
Greenhouse Growers, Are You Ready for Thrips? - News News
As greenhouse producers are preparing for spring and the flowers become more numerous, it is time to get ready for those dreaded thrips. More
Zenik Crespo (back, right) assists Hispanic participants as they identify weeds at Johnston’s Everygreen Nursery in Erie. Photo: L. Follett, Johnston’s Evergreen Nursery
Bilingual Workshops Teach Integrated Weed Management - Articles Articles
Penn State Extension has developed new resources for weed management and is beginning to offer bilingual training opportunities. More
Highlights of the 2017 Penn State Flower Trials
Highlights of the 2017 Penn State Flower Trials - News News
In 2017, 931 entries were in the Penn State Flower trials at the Southeast Agricultural Research and Extension Center, in Manheim PA. More
Photo: T. Baugher, Penn State
A Brief Guide to Hand Lenses - Articles Articles

A Brief Guide to Hand Lenses

Michael J. Skvarla

Arthropods, including plant pests and biocontrol agents, are often difficult to identify with the naked eye. More
Planting Ornamentals
Planting Ornamentals - Articles Articles

Planting Ornamentals

Jim Sellmer, Ph.D., Martin McGann, J. Robert Nuss

This publication covers the factors involved in successful, healthy and long-lived plantings, including buying healthy plants, different types of ornamentals, and the proper way to plant them. More
Black-eyed Susan (Rudbeckia spp.)
Heat and Drought Tolerant Plants - Articles Articles
Sandy Feather, extension educator in Allegheny county, has prepared this list of trees, shrubs, annuals and perennials that don't just survive but will thrive in our long, hot summers. More
Controlling Weeds in Nursery and Landscape Plantings
Controlling Weeds in Nursery and Landscape Plantings - Articles Articles

Controlling Weeds in Nursery and Landscape Plantings

Tracey Lynn Harpster, Jim Sellmer, Ph.D., Larry Kuhns

This guide explains how people who grow and maintain landscape and nursery plantings can develop effective weed control programs. More
Bringing Houseplants Indoors
Bringing Houseplants Indoors - Articles Articles
Many houseplants thrive outdoors in the summertime, but must be brought indoors before temperatures get too low. They need to readjust to conditions inside the house. More
Wild bees like this bumble bee are essential to Pennsylvania agriculture.
Conserving Wild Bees in Pennsylvania - Articles Articles

Conserving Wild Bees in Pennsylvania

Mary Barbercheck, Ph.D., David Mortensen, Ph.D.

Wild bees, which include native and naturalized bees, pollinate a variety of crops. In areas of Pennsylvania, wild bees already provide the majority of pollination for some summer vegetable crops. More
Organic Land Care Best Management Practices Manual
Organic Land Care Best Management Practices Manual - Articles Articles
This free manual provides recommendations to land managers and landscape contractors on best management practices for effectively conducting organic land care. More
Keeping greenhouses free of weeds helps control diseases and insect pests.
Zero Tolerance for Weeds in the Greenhouse - Articles Articles
"Don't let weeds grow in the greenhouse." Growers know it, customers sense it, and Extension educators preach it. But is zero tolerance for weeds attainable? More
Veronicastrum virginicum - culver's root
Weeds in the Fields - Articles Articles

Weeds in the Fields

Mary Ann Ryan

When driving, we often see flowering weeds in fields or roadsides. Casual walks along a country road may cause us to stop and check out the weeds of summer. More
Sowbugs and pillbugs congregate in moist areas. Photo by Sinclair Adam.
Sowbugs and Pillbugs: Occasional but Destructive Greenhouse Pests - Articles Articles
We hear periodic reports of sowbug and/or pillbug outbreaks in greenhouses and high tunnels in Pennsylvania. More
The African Sunset petunia is one of the genetically engineered varieties that the USDA is asking breeders to destroy. Photo: S. Adam, Penn State
Illegal Petunias Pulled From Flower Trials - News News
As horticultural producers of bedding plants are winding down the busy spring season, it came as a shock to many that some of the petunias being produced are actually illegal. More
How good is your greenhouse water?
Water Quality Checklist for Greenhouse Growers - Articles Articles
A quick check of the quality of water you use for irrigation and pesticide application can save you time and headaches in the future. More
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