Gloxinias need to rest before reflowering. When the leaves start to die back, gradually reduce watering until the leaves yellow and die. Place the pot in a cool, dark location and stop watering. Allow the tuberous stem to rest for a minimum of eight to ten weeks in dry soil. Place the plants in a well lighted location.
Poor lighting leads to bud drop and poor growth after flowering.
Water thoroughly, but allow to become moderately dry between waterings. Holiday cacti bloom best when somewhat pot-bound. Repotting is necessary only about once every three years. Full sunlight is beneficial in mid-winter, but bright sunlight during summer months can result in pale to yellowish foliage. This involves covering the plant with a light-tight box daily or moving to a dark location each night.