Abiotic

Abiotic Problems– U of MN; non-living agents such as weather extremes, poor soil conditions, and drought.

Drought info from PA Dep. of Environmental Protection:

Drought Management in PA , Drought Emergency FAQ, Managing Water Use During a Drought Emergency, Drought Information Center.

See FRUIT page.

Insects

Purdue Plant and Pest Diagnostic Laboratory

Plant and Pest Digital Library - Purdue

Entomology Fact Sheets – PSU; Click on search link in upper right corner to search website. Home and Garden Information Center's Plant Diagnostic Website (HGIC) -

U. of MD, diagnostic and decision making skills, photographic keys, photos of beneficial organisms.

Lichen

Lichens - U of FL UFAS Extension by Alicia Lamborn; photos and info; basics of lichens, explains how most lichens need clean air.

Lichenland - fun with lichens by Oregon State U.

Lichens of North America - wonderful photos, intro to lichens, and links to various resources.

UMD HGIC Plant Diagnostic Website, Lichens

OSU Fact Sheet, Ten things you should know about lichens

Plants

Home and Garden Information Center's Plant Diagnostic Website (HGIC) -

U. of MD, photographic keys, photos of beneficial organisms.

Hortsense – Washington State Universtiy, Search Engine

Needlecasts – PSU Plant Pathology Fact Sheets

Plant Disease Diagnostics – U of MN

Plant Doctor - detailed photos of plant damage with name of damage; some with links to solutions; photos by Jeff Mizer, Snyder County Penn State Extension Horticulture Educator. Site designed and edited by Dale Rozelle, a Snyder County Master Gardener. More solution links will soon be added. Ornamental Plant Problems category has detailed photos with name of problem.  Other categories included on specific Garden Hotline pages.

Plant Pathology Fact Sheets - PSU, common diseases of plants frequently grown in greenhouses, interiorscapes, and in outdoor landscapes and nurseries in the northeastern U.S. Scroll down pages to view photos. Three categories stated: General Information, Floral and Foliage Plants, Woody Ornamentals.

Plant and Pest Digital Library - Purdue

Purdue Plant and Pest Diagnostic Laboratory Solution Source - PSU, some links at main site do not work. Categories include: Compost, Flowers, Holiday Plants & Gifts, Horticulture Basics, Houseplants, Lawns, Pesticide Safety, Specialty Gardens, Trees & Shrubs.

Shrubs

Leaf roll/reddish stems - Dieback: Botryosphaeria Canker  HGIC Plant Diagnostic; most common disease of rhododendrns

Trees

SeeTREES page.

Vegetables

See VEGETABLES page.

Questions??? Call your Garden Hotline.