Perennials: Begin planning for next spring. Using garden notes, photographs and sketches, assess which areas need renovation or new plants. Read up on current design trends that may use grasses, native plants and hardscaping to produce pleasing effects. Landscape designers create new designs in the same way as interior designers and clothing designers. The fashions may not appeal, but sometimes new ideas emerge that are just right for your garden.
Flowers: Gather incoming seed catalogs and order new ones, or browse on-line in all the many catalogs and Web sites. Begin planning and ordering. Keep in mind the size of your space and resist the urge to order too many seeds. Plan a seeding schedule. Check dahlia, canna and gladiola bulbs for rotting and/or drying out.
Vegetables and fruits: Begin planning orders for new fruit trees, shrubs or plants. Consider a strawberry bed or a few raspberry canes, if there is a place for them in full sun.
Trees and shrubs: If there is a heavy snow, carefully remove snow from evergreen shrubs if they are weighted down. Prune away storm-damaged branches promptly.
Lawns: If there is snow, avoid using salt near lawn areas. Calcium chloride is safer. Use sawdust or cat litter or even granulated fertilizer. Grass seed can be spread on bare ground where there is no danger of it washing away. It will drop into the cracks caused by frost and germinate in the warm weather.
Houseplants: Keep the holiday plants cool, and they will last longer.
General: Leave the discarded Christmas tree near a bird feeder and the birds will use it as protection from the wind and snow and predators.