Ornithogalum dubium

It grows well indoors. Water the containers weekly to keep the potting soil slightly moist from fall through spring, and always use containers with drainage holes. Set the pots in a room with an consistent temperature between 70 and 75 degrees Fahrenheit through the winter and spring to encourage flowering. Fertilize container-grown star of Bethlehem in late spring using 1/2 teaspoon of 20-20-20 fertilizer diluted in 1 quart of water. In summer, when the leaves die, cut back the dead parts, stop watering and set the pots in a dry spot. They won't look like much again until fall, so set them out of the way and make room for more attractive summer container plants.