An upright grower with velvety red, rose-form blooms that glow against foliage so dark it is almost black. And they bloom from early summer till frost! 3 bulbs fill a 12" pot. Deer tend to avoid. Begonia 'Switzerland'. Tuberous Begonias are some of the most stunning of small plants, with huge, showy flowers and attractive tropical-appearing leaves. And they bloom in the shade! They take 2-3 months to reach their potential, so it's best to start them indoors about a month before the last frost-free date and move outdoors to an area with bright shade (a little morning sun is acceptable). Keep moist but not wet, and fertilize once a month. In fall, dig and store over winter in a cool, dry place (40-50° F).