"Stunning Schefflera and Elegant Edgeworthia Because the South Don't Do Dormant " with Mark Weathington, Director. There's no reason to put the garden to bed for the winter in zone 7 gardens. Winter flowers, exciting evergreens, and low humidity make the winter one of the best times to garden in the south and with the influx of fascinating new plants, we 've only scratched the surface of what can be done in the "off" season..