red spiders on greenhouse maize

Steve Stack sstack at
Sat Feb 20 14:06:09 EST 1999

To maize cooperators,
We are having a serious problem with red spiders on the maize plants
that we are growing in the greenhouse.  Our pest manager has been trying
oil, soap, and Pyrethrin.  The first two aren't particularly effective,
while Pyrethrin is, but Pyrethin severely damages the plants.  Has
anyone else solved the problem of  red spiders in the greenhouse?  If
so, I would surely appreciate learning what to do about them without
seriously damaging the maize plants.
Stephen Stack

Stephen M. Stack
Department of Biology
Colorado State University
Fort Collins, CO 80523-1878
TEL (970) 491-6802
FAX (970) 491-0649
Email sstack at

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