Experts and BHG readers answer.
orange dust in the grass
This is a rust that's common on bluegrass and fescue lawns during periods of moist weather with cool nights. The best way to be rid of it is to feed your lawn because if you feed your lawn it will grow faster than the rust. Plus, rust generally attacks lawns that are a bit tired and need some fertilizer. Remove grass clippings as you mow, too. Don't leave the rust-infected clippings on your lawn.