My potted Polyanthus, which are attached to a wall, appear to have been cleanly cut at soil level and blown out of the pots by the wind. No sign of slugs or snails. Any ideas as to what has happened?
Check the soil for vine weevil grubs.
Central Norfolk UK
That's my guess too - vine weevil grubs eating the roots
“I am not lost, for I know where I am. But however, where I am may be lost.”
Winnie the Pooh