Pyrethrins normally don't hurt the plant, and lose their toxicity after a short period of time ... pay close attention to the label directions ... pyrethrins are made from marigolds, and are a safe pesticide when used according to directions ... don't apply anything in the sun, as the sun's rays magnify in the droplets and burn the plant ... you can gently rinse off your plant with plain water, if you think it was over-applied, or just give it a day, and see if it recovers ... likely will snap right back, if the insects did no serious damage ... for the future: foliar-feeding should be done in the early daylight, when the under-leaves' pores are open, pesticides should be sprayed in the waning hours of daylight, when the pores are closed ... good luck :smokin: