UCCE Master Gardener Program
of Humboldt and Del Norte Counties
Humboldt County Office
5630 South Broadway
Eureka, CA 95503
Del Norte County Office
586 G Street
Crescent City, CA 95531
Right Plant Right Place - Know Your Planting Zones
Successful gardeners know to have healthy and happy plants, is knowing how to select the right plant for the right place. Knowing your climate, sun light, irrigation and soil requirements for plants are the first steps in selecting the "Right Plant for the Right Place".
DETERMINING YOUR PLANTING ZONE
The Western Sunset Gardening Zones takes into account the total climate - length of growing season, rainfall, the winter lows and the summer highs, wind and humidity. Your garden library would benefit with the latest publication of this book. Sunset Zone Information
The USDA Cold Hardiness Zone map is based on the average annual extreme minimum temperature during a 30 year period in the past, not the lowest temperature that has ever occurred or might occur in the future. USDA Planting Zone Interactive Map is a tool where you input your zip code and the map will indicate the cold hardiness zone. Go to Map
The AHS Heat Zone was developed by the American Horticulture Society to indicate the heat averages recorded by the National Weather Services for a twenty one year period.
Check out California Garden Web for more information on climate zones.