Experts and BHG readers answer.
Hi, Ornamental grasses generally do fine without much fertilizer, but if you want to feed them, I recommend a slow-release, general-purpose, dry fertilizer. Osmocote is a good example of a fertilizer of this type. You can buy it at most garden centers or home stores. Because Karl Forester is a grass it will also do fine with a standard turf grass fertilizer if you have any around.