Protect the graft union on rose bushes by mounding soil around the plants and adding mulch on top. Wait until several killing frosts have occurred so plants will be dormant when covered. Plants covered too early may be smothered. Mulch the area heavily to prevent freezing, or dig the hole and put fill in a protected, nonfreezing area, such as a garage or basement. Clean up and discard fallen leaves and fruits around fruit plants to reduce disease carryover.
Late fall fertilizing can help keep lawns green into winter and boost early spring recovery.
If frost hasn't taken your garden yet, continue harvesting. Harvest mature, green tomatoes before frost and ripen indoors in the dark. Use perforated plastic bags as an easy way to increase humidity. Remove plant debris, both crop and weed, from the garden and discard or compost. This will help reduce the carryover of diseases, insects and weeds to next year's garden.