Quote:
Originally Posted by Donna UK
Hi All
I have just been out to move my rhubard plant into the sun and decided to
take the top layer of dirt off to renew with some fresh. When I started to
dig I noticed weevil grubs so started to pick them off. I got out as many
as I can but that is without further down the pot and near to the crown. In
the end I counted 101 of the things. The rhubard is growing so need I apply
anything to kill them, or should I take further action against the critters?
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How did you know they were grubs specifically of weevils?
http://en.wikipedia.org/wiki/Weevil Weevils are mainly noted for damaging dry stored stuff like grain and nuts. (Some things commonly called weevils, aren't, like the cork weevil which damages wine corks, but is actually a moth.) But there are also leaf weevils that eat leaves. And there is the infamous vine weevil whose grubs eat plant roots (and the adults the leaves), and are fond of pot plants.
http://en.wikipedia.org/wiki/Black_vine_weevil We had them in our christmas cactus.
Whatever they were, why do you need to get rid of them? Were they actually eating the rhubarb?
It sounds like your rhubarb is in a pot. Any reason you are not growing it in the ground? I think it might be happier there.
You can get specific pesticides for dealing with vine weevils, mainly for pot-grown plants. You need to water the stuff in about every 4 months. It's quite expensive.