RESOURCES RESOURCES Gardening Information
Heat zones in the United States:
American Horticultural Society
Outside the United States, find your hardiness zone here:
www.backyardgardener.com/zone/#outside
Order trees and get tons of useful information:
Arbor Day Foundation
List of plants that can be toxic to dogs and cats:
The American Society for the Prevention of Cruelty to Animals
Tips on planting, insects, and gardening:
Ohio State Extension