Hi just a few tips to the above description. I just finished planting them in my newly prepared beds in the rock garden. They open up in the sun and close in the evening. They are quite fragrant here fully open in full sunshine. They multiply easily and produce many lateral bulblets. By the beginning of summer they die out completely. So if planted very close as an early spring bulb, they can be lifted and stored in a dark dry place 'til fall, very early, leaving room for something else. In my beds I use very early spring bulbs that are followed later by annuals grown in pots or trays. By lifting them one can avoid it becoming invasive. You can later decide what to do with the bulblets. The individual central bulbs grow in size as years go by and have larger umbells, ( that is many more flowers per stalk) giving a mass color to the bunch.