Star of Bethlehem
When do you transplant your Star of Bethlehem from inside your house to the outside to continue to grow outside? It is in the end process of blooming
You should transplant these when there is not a threat of frost, but these can tolerate the chilly temperatures, so they can be transplanted a little earlier. When the temperatures remain mostly above freezing will be the best time.
This article will give you more information on the care of these: https://www.gardeningknowhow.com/ornamental/bulbs/star-of-bethlehem/star-of-bethlehem-plant-care.htm