Landscaping and Gardening Resources
UC Berkeley Digital Library Images of Plants
Provides over 54,000 images of plants. A variety of organizations and individuals have contributed photographs to this library.
Missouri Botanical Garden PlantFinder
Provides information on over 3500 herbaceous perennials, shrubs, vines and trees.
USDA Plant Hardiness Zone Map
Complete zonal map with temperature ranges for regions in US.
Professional Organizations
National Concrete Masonry Association
Interlocking Concrete Pavement Institute
Associated Landscape Contractors of America
The Pennsylvania Landscape and Nursery Association
The Pennsylvania Horticultural Society
Lehigh Valley Builders Association
Better Business Bureau
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