I think the first ones are Forget-me-Nots (Myosotis), they do spread/self seed, but I think they're very pretty and easy to remove if you don't like them ot they start to take over.
No idea on the 2nd one.
I could equally be completely wrong on the 1st one, an expert will be along shortly I am sure.
"To nurture a garden is to feed not just the body, but the soul." — Alfred Austin
The second one also looks similar to the seedlings of cardoon (Cynara cardunculatus) that pop up from time to time in my garden. Could be that, or Echnops, or something else entirely. Too soon to be sure though. Do you (or a neighbour) have Cynara or Echinops that could have set seed? Or anything else with silvery hairy foliage?
Doncaster, South Yorkshire. Soil type: sandy, well-drained
Forget-me-nots will continue flowering for a long time but do start to get a bit scraggly as the initial flowers go to seed. They will get everywhere (into the lawn, footpaths, patios) so if you want to avoid this pull out. But I think they look really nice so I left most of mine in last year and this year. You can also move them fairly easily though they do take a little while to re-establish.
I think I did sow some Echinops at some point in that border. Are they invasive when they flower and set seed?
I have had an Echinops ritro for many years which spreads (which means it can be dug up and divided) and although it is supposed to self-seed I've never seen any seedlings near it. But deadheading would prevent any spread by seeds. I love my plant - it came from my mother's garden after she died so it is rather special to me. The leaves are a lot more jagged than those in your pic but then I've not seen an echinops seedling so maybe the young leaves are smoother.
I’ve been trying to get rid of Echinops for a few years, there’s always a few coming up and the original plants need a pickaxe. The seedling does look like one. You’ll soon see because it will become serrated. Lovely for the bees though. On the other hand, it could just be some dandelion type weed.
Gardening on the wild, windy west side of Dartmoor.
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No idea on the 2nd one.
I could equally be completely wrong on the 1st one, an expert will be along shortly I am sure.
don't know lower one
The seedling does look like one. You’ll soon see because it will become serrated. Lovely for the bees though.
On the other hand, it could just be some dandelion type weed.