Proper care for your Pendula Red begonias after they bloom will ensure the health and longevity of your plants. Begin by removing spent flowers to encourage new blooms and prevent the plant from expending energy on seed production.
Continue to water and fertilize your begonias throughout the growing season to support their overall health. As autumn approaches and temperatures drop, reduce watering and allow the foliage to die back naturally. In colder climates, dig up the bulbs, clean them, and store them in a cool, dry place until it's time to replant them in spring.
In areas with mild winters, such as in USDA hardiness zone 9 and up, it is possible to leave the begonias year-round in the ground.