Do You Deadhead Rieger Begonias

Temperature. Reiger begonias need average to warm (and humid) temps. They can go as low as degrees Fahrenheit at night in the fall to help stimulate a bloom.

How do you keep Rieger begonias blooming?

Temperature. Reiger begonias need average to warm (and humid) temps. They can go as low as degrees Fahrenheit at night in the fall to help stimulate a bloom.

Do you cut dead flowers off begonias?

Deadheading is the process of removing spent or faded flowers to prevent the flowers from producing seed, encourage more flowers and stems or clean up the plant. Hardy in U.S. Department of Agriculture zones 6 through 11, depending on the cultivar, begonias (Begonia spp.) do not require deadheading to thrive.