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Photo credit: Laura Nicholas
Grow Your Own Lemons - Articles Articles

Grow Your Own Lemons

Laura Nicholas

Lemons can be grown as a container plant, even in Pennsylvania. Find out how to cultivate lemons from blossom to ripe fruit in this article. More
Picture credit: Lois Miklas
Shamrocks as Houseplants - Articles Articles
The houseplants commonly sold as shamrocks are actually members of the Oxalis genus. This article explains how Oxalis plants became known as shamrocks and how to care for Oxalis houseplants. More
Tillandsia are tucked into this winter arrangement. Photo credit: Carol Papas
Tillandsia (Air Plants) - Articles Articles
Air plants are finding a place in home decor. Care is not difficult if you understand how they grow in their natural environment. More
Cyclamen in bloom Photo credit: Carol Papas
Care and Culture of Winter Holiday Plants - Articles Articles
One of the nicest gifts of the winter holidays is a living, blooming plant. Learn how to care for these plants so that they become gifts that keep on giving. More
Photo credit: Nancy Knauss
Houseplant Selection - Articles Articles

Houseplant Selection

Dianne Machesney

New varieties of old-favorite houseplants are available. This article recommends plants that can thrive in a home environment. More
Photo credit: Alyssa Collins
Botany Lessons from a Holiday Poinsettia - Articles Articles
Learn more about the natural history and botany behind your greenhouse-grown poinsettia. More
Four-lined plant bug adult. Photo: S. Feather, Penn State
Four-lined Plant Bugs Are Active Now - Articles Articles
Four-lined plant bugs, Poecilocapsus lineatus, become active in May. 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
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
Choosing and Caring for Houseplants
Choosing and Caring for Houseplants - Articles Articles
Plants make a welcome addition to the home or office, but did you know that houseplants could actually clean the air? More
Container Gardening
The Art of Container Gardening - Articles Articles
Constructing a container garden isn’t about doing everything perfectly. In fact, there is no right way to create a container garden. 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
Photo: Elizabeth Bush, Virginia Polytechnic Institute and State University, Bugwood.org - vole Microtus spp. flowering dogwood, Damage: dieback and off color foliage
Vole Control in Overwintering Nursery Stock - Articles Articles
You know the situation…you and your crew spent days cleaning, pruning and moving perennial and nursery stock into your overwintering houses. More
Twospotted spider mite (Tetranychus urticae) Photo: David Cappaert, Michigan State University, Bugwood.org
Twospotted Spider Mites - Articles Articles
One of our most common landscape pests is the two-spotted spider mite (Tetranychus urticae). More
Tissue cultured plantlets: just from the lab
Tissue Culture Finishing for Greenhouse Growers: Stage III-Stage IV - Articles Articles
In the past 25 years great development has occurred in tissue culture plant production for horticulture. More
Phytophthora on African violet
Phytophthora Root Rot On Woody Ornamentals - Articles Articles
Fungus-like organisms belonging to the genus Phytophthora are soil- or plant-borne and all are plant pathogens. More
Gerald Holmes, California Polytechnic State University at San Luis Obispo, Bugwood.org
Powdery Mildew Cross Listing - Articles Articles

Powdery Mildew Cross Listing

Gary W. Moorman, Ph.D.

A few of the common powdery mildews and the plants that each can infect are listed here. More
Schefflera (Brassaia) Diseases
Schefflera (Brassaia) Diseases - Articles Articles
Informational table showing disease name, symptoms, pathogen/cause, and management of Schefflera (Brassaia) diseases. 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
Pothos Diseases
Pothos Diseases - Articles Articles
Informational table showing disease name, symptoms, pathogen/cause, and management of Pothos diseases. More
Poinsettia Diseases
Poinsettia Diseases - Articles Articles
Informational table showing disease name, symptoms, pathogen/cause, and management of Poinsettia diseases. More
Philodendron Diseases
Philodendron Diseases - Articles Articles

Philodendron Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Philodendron diseases. More
Pansy Diseases
Pansy Diseases - Articles Articles

Pansy Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Pansy diseases. More
Palm Diseases
Palm Diseases - Articles Articles

Palm Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Palm diseases. More
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