Holiday Cactus Blossom Drop
Rosie Lerner, Extension Consumer Horticulturist, Department of
Horticulture, Purdue University
Holiday cactus (including Christmas,Thanksgiving
and Easter types) are notorious for dropping flower buds in the
home environment. Though
they do belong to the cactus family, they are tropical type
plants and so not quite as drought tolerant as their desert relatives.
Dry soil is likely the most common cause of flower bud drop. The
plants will noticeably wilt when under drought stress. Water thoroughly
when the top inch or so of soil feels dry to the touch. The length
of time between waterings will vary with the air temperature, amount
of light, rate of growth and relative humidity.
We typically think of cacti as being heat loving plants as well,
but holiday cacti will keep their blossoms longer in cooler temperatures.
Keep the plant in a well-lit location away from drafts from heat
vents, fireplaces or other sources of hot air. Drafts and temperature
extremes can also cause the flower buds to drop.