It looks very much like Celandine to me. Does it have yellow flowers? If it is Celandine you have to make sure to remove ALL the little bits of bulb.

It does look rather like celandine, but they are usually more pointed and have a pattern of lighter green patches round the border. Other clues would be yellow flowers in early spring and the leaves disappear by midsummer.

Have you seen any flowers on this plant? If so can you describe them?

If it is celandine then the best of luck. I never did eradicate it (pretty though it is) from my last garden as it spreads at a terrific rate. We have a few in this garden too and I dread to think how many will have taken over in a few years. The only consolation is that it dies right back to ground level once flowering is over.

You could try spraying if it isn't too close to other plants but the best is to keep on digging out bits as soon as you see them.

Hi, welcome to GoY, I think there are 2 possibilities, 1 of which is lesser celandine, { Ranunculus ficaria}, whichgrows to about 2" high, has yellow flowers in march or april, the other possibility being Soleirolia soleirolii, formerly Helxine soleirolii, also grows to a height of about 2", common name 'mind your own business' among many common names, this hs bright green leaves with 'bristly' hairs, and has pink tinged white flowers, both are quite difficult to eradicate, and need regular careful weeding, so as not to break the roots, Derek.

Celandines also eject their seeds like little rockets which is how they spread so far so fast.
Try digging some up carefully, to get the complete plant right to the root. Celandines grow from tiny corms which are easily seen. So you have four ways of deciding if that's what they are, leaf shape, leaf colour and pattern, (& leaves disappearing in summer), flower colour and corms on the roots.

Derek has described Soleriola.

Would love to know if either of these descriptions fit? You can reply as a comment on the question under the replies.

it also reminds me of penny wort Umbelicus rupestris.
doesn't look like celandine at all.

when you dig it up what does the root look like?

How big are the leaves? It looks like Winter Heliotrope, Petasites fragrans, to me. Very invasive and difficult to get rid of, I'm afraid.

The leaves look smaller than that to me. It will have tallish pale pink flowers in late winter if its that. Please do send more info!

It doesn't flower very much in my area, blink and you miss them.

Pity Kevin hasn't said which part of the country he lives in. It does flower quite well round here.Probably needs the milder climate.

I would try putting a black plastic bag over it and deprive it of light usually kills most things.

I think it is something I have in my garden. The flowers look a bit like a buttercup. It disappears after flowering. If I dig where it grows, I discard any of the small roots which look like mini dahlia roots. It is a nice shaped leaf, a pretty flower and can be pulled out easily.

That certainly sounds like celandine Scotsgran, but I think if you look closely at the leaves they might be a bit different, ie with little point at the end and a pattern of lighter green?

http://www.downgardenservices.org.uk/celandine.htm has an excellent article on lesser celandine. I know I have been puzzled as to why there should be bulbils on the soil surface after the leaves have disappeared after flowering. Now I know why. If you highlight the link and choose 'go to-----' from the drop down list that is a quick and easy way to get to the link. i have not noticed a pattern on the leaves but I honestly cannot say I have looked very closely. I will have a look when they next appear.