tent caterpillars in fruit trees

cvnativeinpa · 2006-05-13T23:37:38+00:00

I've had an orchard for four years. This year, the tent caterpillarshave decided they are taking over. Can you tell me, besides using BT,what are some other ways to get rid of these pests? Should I havesprayed with BT earlier, like before they went into pink bud, or can Ispray now that they are blooming? What would make them come in thisyear instead of last or the previous years?