what is this please?

I don't recognise this as a weed, so it probably came in the soil along with the sedum.
Does anyone know what it is, so I know whether to pull it out or let it grow,
Thanks.

 

Mmmm does look very like the leaf on my francoa sonchifolia ? it is a prolific seeder here.

 

Does it look like one of these which are nipplewort seedlings (weeds) in various stages of development?



A mature plant will have yellow flowers like this;

 

Thanks, Simbad - I have googled francoa sonchifolia and it could well be that. I will leave it in the pot and see what happens :-)

 

Looks suspiciously like a Ragwort seedling to me.
If it is, get rid of it sharpish.
More info here: The Ragwort Hub - ragwort in detail

 

It`s a weed, get rid of. Unless you have a wild garden.lol