This is from a grower in India:

The logic behind keeping the plants without water, food, is called forcing. Time depends on the plant size. 15 days to 3 months.
You can train a plant to give flowers on a particular time. If u want your plant to b ready with bloom say in april then keep the plant for 30 days and repot in mid of march. Most of the time you get only flowers not leaves.
That is how Thailand people keep their plants ready for flower show.

wow great minds think alike i just found this info on indiaadeniums .com or something like that trying to decide if mu purple rose are big enough to stand this treatment

THANKS FOR POSTING MOST INFORMATIVE AND I LOVED LOOKING THREW THAT SIGHT I THINK THAY HAD GREAT INFO ON POLLINATION TO

mike

What site did you go to, I would like to read about that too.

The double purples are too young, just babies. This is about older plants. The caudex needs to have reserve food.

Doris, this was all the man said.