Original Post (as suggested by jmusser I reverted my edits and put them into an answer)
In my garden there is a bulb plant growing since the beginning of last autumn. The thin leaves have grown out 50 - 70 cm and a bulb has up to 6 leaves before winter came. It has survived some cold days (-15 C) in winter.
Now in spring the shape of some of them is changing (see below).
I would like to know what this plant might be so that I can take measures to beautify the spot and to know when to clean up, and of course, whether I can expect flowers ;-) .
Some photos (click to enlarge):
New shape this spring