Posted: 21/11/2015 at 07:34
nematodes will not make a difference to weevils NOW. Only Provado will kill weevils at this time of year.
The only real issue I have is with heucheras so localised doses of Provado are used and with great effect.
I used nematodes on my grass this autumn for leatherjackets for first time. Used to use lawn grub killer but this too is banned.
Trouble is we don't really know the truth about chemicals....well, most things I guess.....and gardeners are finding it increasingly difficult to grow their crops when chemicals are withdrawn. Bordeaux mixture, for example, for peach leaf curl is no longer available yet we can go out and buy the ingredients to make our own! Puzzling