Hi Bob: Can you tell me which of the nematodes works on Iris borer? They have decimated mine at home. When I worked for the University of Texas Medical Branch on Galveston island, one of the researchers was experimenting with live squid to determine how to get human nerve cells to regenerate. We did not use any pesticides on any of the landscaping in the city block containing his research lab to avoid any possible contamination of his results. Lacewings, foliar nematodes and parasitic snails (for snail control on Hymenocallis) were some of the more successful biocontrols we used. Boyce Tankersley Director of Living Plant Documentation Chicago Botanic Garden 1000 Lake Cook Road Glencoe, IL 60022 tel: 847-835-6841 fax: 847-835-1635 email: btankers@chicagobotanic.org "I have also extended this to my bearded iris because I had such a difficult time with iris borer as I garden organically. It has been quite effective and I have had several years now where we have been "borer free." Bob Hoel Near Chicago