SPIDER MITES ON ROSES
05-Feb-92 08:43:53
Sb: #384-SPIDER MITES ON ROSES
Fm: Jeff Ball 71271,1624
To: 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.