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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
Why isn't My African Violet Flowering?
Why isn't My African Violet Flowering? - Articles Articles
Most modern African violets (Saintpaulia spp.) bloom throughout the year without much effort on the grower’s part. More
Extending the Garden Season with High Tunnels
Extending the Garden Season with High Tunnels - Articles Articles

Extending the Garden Season with High Tunnels

Elsa Sanchez, Ph.D., Michael Orzolek, Ph.D.

High tunnels offer plants protection from wet, saturated soils and low temperatures in the spring and fall, thereby extending the gardening season. More
Powdery mildew on Poinsettia
Powdery Mildew - Articles Articles

Powdery Mildew

Gary W. Moorman, Ph.D.

Powdery mildew occurs on many different flowers, woody ornamentals and trees. More
Poinsettia Diseases
Poinsettia Diseases - Articles Articles
Informational table showing disease name, symptoms, pathogen/cause, and management of Poinsettia diseases. More
Over-Fertilization of Potted Plants
Over-Fertilization of Potted Plants - Articles Articles

Over-Fertilization of Potted Plants

Gary W. Moorman, Ph.D.

Over-fertilization of commercial pot or container-grown crops results in high concentrations of soluble salts in the potting medium. More
Organic and Biological Control of Plant Diseases Organic and Biological Control of Plant Diseases - Articles
Organic methods involve growing and maintaining healthy plants without using synthetic (man-made) fertilizers, pesticides, hormones, and other materials. More
Photo credit: James Sellmer
Get Started in the Landscape, Lawn, Nursery and Greenhouse Businesses - Articles Articles
This guide will assist you in starting an exciting and rewarding career in the Green Industry: landscape, lawn, nursery and greenhouse businesses. More
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Fungal Root Rots And Chemical Fungicide Use - Articles Articles
Root rots of floricultural and woody ornamental crops are one of the most important causes of crop loss. More
Petite cones of Canada Hemlock. Photo: Kathy Salisbury
Evergreen Native Plants - Articles Articles

Evergreen Native Plants

Kathleen V. Salisbury

After the autumn leaves fall we start thinking of plants that will keep our interest throughout the winter. More
Diagnosing Poor Plant Health
Diagnosing Poor Plant Health - Articles Articles

Diagnosing Poor Plant Health

Gary W. Moorman, Ph.D.

Many things make plants unwell and pests and diseases are only two causes of poor plant growth. More
All of plants shown here are in containers, plus many that cannot be seen in this image. It would be nearly impossible to keep them all watered properly without an irrigation system.
Building and Operating a Home Container Irrigation System - Articles Articles

Building and Operating a Home Container Irrigation System

Tom Butzler, Thomas Maloney, Darryl Dressler

Keeping many pots of flowers and vegetables watered consistently including when you are on vacation requires the installation of an irrigation system. More
Preventing, Diagnosing, and Correcting Common Houseplant Problems
Preventing, Diagnosing, and Correcting Common Houseplant Problems - Articles Articles
Properly selecting houseplants for purchase at a garden center or other retailer is essential if you want to take home a good, healthy plant and avoid potential problems. More
Pennsylvania Native Plants for the Perennial Garden
Pennsylvania Native Plants for the Perennial Garden - Articles Articles
Herbaceous (nonwoody) perennial plants add year round interest to any landscape and are a popular choice of plants among gardeners. More
How to Pasteurize Medium and Sterilize Containers and Tools
How to Pasteurize Medium and Sterilize Containers and Tools - Articles Articles

How to Pasteurize Medium and Sterilize Containers and Tools

Jim Sellmer, Ph.D., Kathy Kelley, Ph.D., Phyllis Lamont

To increase the survival rate for seedlings during germination, containers and tools should be sterilized and pasteurized or sterile soilless mixes should be used as growing medium. More
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