Gardening Resources and Additional Information
Penn State Master Gardener Site
Penn State Horticulture News
Penn State Horticulture and Gardening
Phipps Conservatory
Ohio Extension Resources
Longwood Gardens (near Philadelphia)
Stan Hywet Hall and Gardens (Akron, Ohio)
Fellows Riverside Gardens (Youngstown, Ohio)
Morris Arboretum of the University of Pennsylvania
Perennial Plant Association
