I'd like to ask you to identify the following plant in order to determine whether its current location is appropriate for it.
Grows in central Europe, zone 7a, overwintered without being covered although it is sheltered from the wind (the winter was milder than usual with virtually no snow).
Bought from a DIY chain store as part of an "alpine" plant set, none of which had any name to them. This is the only type that survived, everything else croaked.
Did bloom around June with small white flowers on tall upright stalks (about 1 foot tall).
One of such stalks was accidentally pulled out of the ground which proved this particular plant had shallow and thin roots without a single main one.
It's currently surrounded by sedum, which may also serve as a size reference, as shown in the last photo.
