Species and Varieties

Information on species and varieties of ornamentals and floriculture, including poinsettias, violets, hydrangeas, viburnum, marigold, pansy, lilac, mountain ash, irises, lilies, narcissus, impatiens, holly, pothos, hostas, lilies and gloxinia.

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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
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
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
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
Whitney Cranshaw, Colorado State University, Bugwood.org
Oystershell Scale - Articles Articles
The oystershell scale is a common armored scale insect that causes injury to shade trees and shrubs, most often lilac, ash, dogwood, maple, poplar, and willow. More
Lorraine Graney, Bartlett Tree Experts, Bugwood.org
Obscure Scale - Articles Articles
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. More
Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org
Magnolia Scale - Articles Articles
The magnolia scale is one of the largest scale insects in the United States. It feeds only on magnolia. More
Spring Plants that are Poisonous to Horses, Dogs and Barn Cats
Spring Plants that are Poisonous to Horses, Dogs and Barn Cats - Articles Articles
Many ornamental plants can be harmful to horses, dogs and barn cats. More
Lacy L. Hyche, Auburn University, Bugwood.org
European Fruit Lecanium - Articles Articles
The European fruit lecanium is a key soft scale insect pest of shade trees and other woody ornamental plants in Pennsylvania. More
Lorraine Graney, Bartlett Tree Experts, Bugwood.org
Eastern Spruce Gall Adelgid - Articles Articles
The eastern spruce gall adelgid is a key pest of Norway spruce, Picea abies, in northeastern United States. More
Figure 1. Adult boxelder bug
Boxelder Bug - Articles Articles
The boxelder bug frequently becomes a nuisance pest around homes and buildings near plantings of the boxelder, Acer negundo. More
Poinsettias
Poinsettias - Articles Articles
Choose your poinsettia carefully. Healthy plants are worth the extra money! More
Plants for Your Office
Plants for Your Office - Articles Articles
Green plants make a welcome addition to any office, but did you know that plants could actually clean the air? More
Long-blooming Perennials
Long-blooming Perennials - Articles Articles
A listing of perennial plants with long bloom times. More
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