#SPIDER MITES ON ROSES
2 messages in this thread
I have several floribunda type roses in containers in inland San Dieg
County, California. The only trouble we have with them is to keep mites
away during warm weather. I have never had problems with spider mites on
roses planted in normal beds, but I have discovered that in this locale the
mites just luv 'em when it gets warm. The only thing I have seen locally
is to use a systemic insecticide such as Di-Syston, which I know needs to
be handled with specaial caution – its quite toxic. Does any rose fans out
there know any different techniques they've dealt with mites, especially on
roses in containers? Michael Maculsay 70700,2667
Michael, encapsulated pyrethrum will control mites on container roses. The
real question here is why are the roses in stress? That is why you have
mites. If you can reduce the stress in the plants, you will reduce, if not
elminate the mite problem. Otherwise, you are just going to be keeping
those plants medicated as long as they are stressed. I don't know much
about roses, but I would be suspicious of the soil temperatures getting too
high. Most plants don't like roots to be in temperatures above 85 degrees.
Maybe some of the rose experts on this forum can help you there.