I treat them the same as jmorth describes and also get reliable bloom. I did purchase some last year from 2 vendors (6 bulbs from one, and 1 bulb from the other), and oddly none of them bloomed the first year, but all of them bloomed this year. I grow them where they receive about 1/2 a day of direct sun. I use a soluble fertilizer for blooming plants on them.
