Does anyone know of a seed-friendly post emergent, selective herbicide? I've got a new customer, who has weeds in her lawn, where I'd like to seed. Because of the time of year, I'm going to use a good variety of Perennial Rye. I'd rather not have to use a non-selective herbicide, like I normally would, but if I have to, I will. I just hate the idea of killing the grass that's amongst those weeds. Thanks for any help guys.