Christmas cactus, like chrysanthemums, responds to day length (actually,
night length) along with cooler temperatures.. If you can, put your
cactus out for a summer vacation as soon as the weather permits, in a
shady area. Leave it there as long as you can, until weather gets cold,
then bring it in to a cool area where it will get natural light but no
artificial light at night. The lengthening nights, cooler temps, and
less watering will initiate budding. When you bring it into the warmer
house to admire the flowers, if you can keep it cool, the flowers will
last longer. If you can't give it a vacation outdoors, keep it in a
room which gets natural light only, but no light at night, starting in
August, water it sparingly and keep it cool as possible. Good luck!
Wendy (not Joe - he's the Under Gardener, the muscle, the lawnmower)

Steve Glines wrote:

I have 2 20+ year old Christmas Cactus. They should be budding by now
but nothing in sight. What should I do?


--
Joseph S. Larson
27 Arnold Road
Pelham, MA 01002-9757
413-256-8256
http://myprofile.cos.com/larson358