Disappeared snowdrops

I put in hundreds of snowdrop plants in the green a few years a go. Not one came back last year or this. There was no evidence of digging up. I understand that they are one of the few bulbs that don't mind damp ground. I understand also that snowdrops in the green are much more likely to take than just bulbs. Any ideas as to what might have happened? I could put in a load more plants this spring, but there seems little point if I don't see the previous mistake.Thanks
0
Posts
As for them growing in damp ground yes, my friend had a huge collection and much of her garden was boggy in winter. Shouldn't be a problem.
Could you plant them in aquatic baskets sunk into the soil so you know exactly where they are and see if you can detect any reason for their demise?
this was when it had a privet hedge but then we replaced it with laurel.
They’ve got less and less each year.😢
I can’t think of a reason other than the laurels.