Posted: 10/11/2013 at 00:02
Yep, the dreaded vine weevil. It's not just the grubs you see but the embryonic ones ??ou can't see there. Thoroughly check your begonias and then empty the soil onto a board, hard surface or bin liner and let the birds sIft through. Don't be in a hurry to use that soil.
I would water your remaining pots with vine weevil killer ASAP.