the foliage of one and two remind me of nemophilia, a pretty annual.
3 could still be grass, i often find 'weeds' in gc plants.

It certainly feels like grass tto, but I can't seem to find the plant that should be there if it is grass.

LOL, I may just leave number 3 and see what happens in Spring.

Thanks for the reply.

The plant may still be dormant or died off in the winter. Have you any photos of the same bit of garden with the plant in from last summer?
I pulled dead stems up then checked photos only to find they were perenials. Oops, but I replanted them and am keeping fingers crossed.

You asked me Alex! To me, 1 & 2 look like a bittercress, a weed that seeds around a lot. 3 looks like grass although Seaburngirl could well be right and the proper plant is in its winter dormancy underneath it.

i thought bittercress at first but isnt it too big and pale?

I will check to see if I have any of my photos will show me what was there.

I have just checked and I had a blue Gentian there.

Don't know if this helps.

I will still leave it and see what happens.

There is no gentian showing in picture 3, Alex. At this time of year the leaves and stems of the gentians will have died off and there will be a tiny crown of green buds at ground level. If it is still alive the grass will be choking it. I would suggest emptying the pot and gently separating the grass from anything else that may be alive in the pot. If you find a live gentian then pot it up again.

O.K, thnaks Bulbaholic.