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Begonia x tuberhybrida
Beautiful tuberous begonias are among the most elegant of shade-loving plants. These tender bulbs prefer humid, cool-summer climates. In these regions, their intense colors brighten shady gardens as no other plant can. Their big, bold blooms may be single or double as plants produce separate male and female flowers. The larger flowers on the plant are male and can reach 6 inches across.
Many tuberous begonias have an arching plant habit, which makes them excellent for growing in hanging baskets or container gardens. Note: In areas where they're not hardy, dig up the tubers before the first fall frost and store them dormant in a cool (35-40 degrees F) place over winter. Start them indoors several weeks before your last frost date.