You possibly did not plant them in a big enough pot and so have not been able to earth up properly. When did you plant them?

yes i think you are right , the pots measured approx 30cm across and about just over a foot high, but i wrapped black plastic bags around the top so i could put more grass cuttings around them. I think i planted them end of march/beg april. Do you think i have potatoes in there somewhere? Thanks Sandi

The only way to know is to turn the pot out - personally I doubt you have edible potatoes.

oh dear, at least th courgettes are growing, many thanks for your help

Out of curiosity why did you put grass clippings round the potato tops rather than soil?

i saw it on alys fowlers the edible garden and so i have also put the clippings around my courgettes, tomatoes and cucumbers as it helps to retain the moisture.

That makes sense but your potatoes... no!

Oh well, never mind, you learn by your mistakes. When I empty them out I will let you know whats in, or not in, the pots. Many thanks for all your comments.