NATURAL LIGHT: Adequate light is the most important factor in promoting flowering. Place plants near any window that has bright, but filtered, light. An east window is best because it gets morning sun. A thin curtain will be necessary if placing plants in a south or west window. In order to develop a nice symmetrical form, plants must be turned 1/4 turn every week.
FLUORESCENT LIGHT: If adequate natural light is not available, plants can be grown under fluorescent lights. Use double tube fixtures with one cool white bulb and one broad spectrum bulb. Lights should be 8 to 10 inches above the top of the plants and turned on for 12 to 14 hours a day. If plants have tight centers or seem to be bleaching out, reduce the number of hours to 8-10 a day.