Ornithogalum Umbellatum is the most common form of Ornithogalum with star-shaped white flowers that close at night. It’s the hardiest form for the North. In the South it’s a good naturalizer, but can be aggressive. South of zone 6 you might want to sow it in a pot to keep it in bounds.
Size: 5/+ cm
Plant: 10 Bulbs Per Sq Ft
Bloom Time: Early Spring
Planting Depth: 4"
Height: 12"
Zone: 4-9
Exposure: Semi-Sunny