In the garden, begonias need rich, porous, well-drained soil and shelter from wind. Space 12" apart in shade or partial shade. Keep the soil evenly moist and fertilize at least once a month. Tuberous begonias should be dug and immediately given a bath after they are lifted. They should be stored over the winter in shallow, open trays. If there may be mice or other rodents, place a wire covering over the open trays. Hardy in Zone 10.