Last year this trough contained Dianthus Napoli (red) and Dianthus Bianca (purple and white)
I thought I'd cleared the trough out months ago then noticed these vigorous plants growing there.
They don't seem 'juicy' like weeds but are very strong with very tough stems and as they appear to be very happy I'm loathe to pull them up until I know what they are. I'm also wondering whether I inadvertently planted them myself eg as unidentified bulbs found in the greenhouse.
Can anyone help please?