University of Arizona's Frost Protection web site is an excellent reference on frost and freezes, and how they affect plants. Great tips are provided to help you learn ways to protect plants in the event of a frost or freeze. Don't go into winter without checking this one out!
Favorite or New Plant
Mexican Bush Sage (Salvia leucantha)
Salvias are hot items in southern gardens these days and few rival Salvia leucantha, also known by its common name Mexican bush sage, for carefree beauty. Native to the southwest, it adapts well to the southeast as well. During the spring and summer the plant is a silvery green mound of upright stalks and lance-shaped leaves. In fall it lights up the garden with beautiful purple/violet blooms which are a favorite of hummingbirds and make excellent dried flowers.
The standard type sports purple bracts with a white interior bloom but a solid purple form is also available. This cold hardy southern perennial prefers full sun and a well-drained soil with lots of compost added. Once established it will tolerate drought quite well.