AHS Heat Zone Map
Map of United States showing in color plant heat zones.
The Garden Club of America
The purpose of the Garden Club of America is to stimulate the knowledge and love of gardening, to share at educational meetings, conferences, correspondence, and to restore, improve and protect the environment through educational programs and action in the fields of conservation and civic improvement. A wealth of information at this site.
Located 14 East 60 th St, 3 rd floor, New York, New York 10022. Phone: 212 753 8287 FAX: 212 753 0134
The Gardners of America
Men's Garden Club of America
A national organization with over 4,800 members . Emphasis on gardening education and community beautification. Produce a beautiful 13 full page Gardeners Calendar with monthly seasonal gardening suggestions.
The map at this site links Master Gardeners websites in all 50 states and 3 Canadian provinces. Master Gardener program is a two part educational effort. Gardeners are provided with intense education as well as volunteer opportunities. Educational information at this site.
National State Garden Club
This site provides education and gives members opportunity to promote the love of gardening, floral design, civic and environmental responsibility. The garden clubs are organized by states. One of the largest sources for gardening information on the internet.
State Cooperative Extension Services Directory
State Plant Regulations
A non-profit organization of the plant pest regulator of each of the states and of Puerto Rico. Foster effective and harmonized plant health programs. The National Plant Board members work cooperatively with the National Association of Departments of Agriculture. They are a part of helping to prevent entry of new pests and diseases in the country.
USDA Plant Hardiness Climate Zone Map
The USDA Plant Hardiness Zones divides the United States and southern Canada into 11 areas based on a 10 degree Fahrenheit difference in the average annual minimum temperature.