"La Puce" wrote in message
oups.com...

Philippe Gautier wrote:
Funny, I tried the nematodes without any success in my garden and
concluded that it was too damp and cold!!!

Was it in spring? Because that's when you ought to do it. Twice at 3
weeks intervals. You will see the results the following years by seeing
less or none of the tiny little black slugs. I'm looking forward to
next spring to give my experiment a scoring point (cross fingers ;o)

Tu es francais?

At the risk of being verbally abused and physically assaulted by you I must
point out serious errors in your post.
The nematodes will only survive above 5C. The time for application is when
you can guarantee that below 5C is not likely at nights or daytime.
Applications every 6 weeks (not 3) is the recommended dosage by the
reputable manufacturers. Slugs only have a few months when they are not
active and unfortunately they have plenty of time to build up a significant
population when the nematodes are inactive (i.e. dead).
Your hopes of fewer slugs next year are wishful thinking.
I should add that the use of nematodes in a closed environment (greenhouse)
is a different scenario.