Below is the usda planting zones map also known as the usda hardiness zone map. The southern coastal region is the warmest and winter extreme lows are 30 degrees f while the coolest regions in the state may dip to 20 degrees f.
The following chart is a more accurate guide to use when looking at plant hardiness for central oregon.
Garden zone map oregon. Coldest mountain and intermountain areas of the contiguous states marked by a short growing season and relatively mild summer temperatures zone 1a includes the coldest regions west of the rockies excluding alaska and a few patches of cold country east of the. Oregon zones are expansive and include zones 4b through 9b. According to the usda hardiness zone map central oregon is placed in zone 6 10 degrees fahrenheit to 0 degrees fahrenheit.
When shopping for new plants for your garden landscape the terms plant hardiness zones growing zones and planting zones may at first seem a bit confusing. To find which oregon zone you are in you can enlarge the map above. The usda map is the one most gardeners in the eastern united states rely on and the one that most national garden magazines catalogs books websites and nurseries currently use.
Understanding the usda planting zones you live in can mean the difference between success and failure in your garden. Oregon interactive 1990 usda hardiness zone map. Each zone is 10 f warmer or colder in an average winter than the adjacent zone.
Planting zones are areas you can find on a growing zone map that show exactly which plants are best suited to thrive in your given area or zone. List of hardiness zones for oregon cities and locations. These are areas which range in minimum temperatures from 60 degrees fahrenheit to 70 degrees fahrenheit.
This map divides north america into 11 separate zones. Oregon hardiness zones for selected cities and locations. The us department of agriculture divided out the map of the us in areas which range from planting zone 1a to planting zone 13b.
Planting plants vegetables and flowers that are appropriate for your us growing zone will make sure that your garden is happy and healthy year after year. In some versions of the. Based on the 1990 usda hardiness zone map this interactive version covers the state of oregon which ranges from usda zone 4a to usda zone 9b.
Planting zones or growing zones are illustrated on a map known as the usda plant hardiness zone map. However this is really oversimplified given our many microclimates. For a detailed western oregon zone map click the link under image at left.