One of the most important steps in choosing plants is making sure it is suited to your climate. Find your USDA zone using these state maps. You can then choose plants that are suggested for that USDA zone. Just click on the picture to see the full size map.
31. New Mexico USDA Zone Map

Photo © USDAUSDA Zones 5a through 8a represented in New Mexico.
32. New York USDA Zone Map

Photo © USDAUSDA Zones 3b through 7a represented in New York.
33. North Carolina USDA Zone Map

Photo © USDAUSDA Zones 6a through 8a represented in North Carolina.
34. North Dakota USDA Zone Map

Photo © USDAUSDA Zones 3a through 4b represented in North Dakota.
35. Ohio USDA Zone Map

Photo © USDAUSDA Zones 5a through 6b represented in Ohio.
36. Oklahoma USDA Zone Map

Photo © USDAUSDA Zones 6a through 7b represented in Oklahoma.
37. Oregon USDA Zone Map

Photo © USDAUSDA Zones 4a through 9b represented in Oregon.
38. Pennsylvania USDA Zone Map

Photo © USDAUSDA Zones 4b through 7a represented in Pennsylvania.
39. Rhode Island USDA Zone Map

Photo © USDAUSDA Zones 4b through 7a represented in Rhode Island.
40. South Carolina USDA Zone Map

Photo © USDAUSDA Zones 7a through 8b represented in South Carolina.