If you think about it, cats rarely roll in plants of any kind. Unless it's the drug-like catnips and valerians, most cats ignore growing things. It's the dirt they covet. My own cats are too busy napping in the catnip to bother the rest of the yard, but when they do emerge from their stupors they'd rather watch the goldfish than scratch in the few inches of soil I've left unplanted. Newer, barer gardens, however, call for different tactics.
Some people sprinkle things.
Others swear that ground up grapefruit or lemon rind is effective. I used to spray with hot peppers and garlic steeped in water, which seemed to not only repel furry critters but also aphids. And then there's the theory of marking. Cats mark out their territory by spraying, and learn to avoid territories already marked by other felines. Some people have used predator urine on the theory that a cat may wisely choose to avoid a territory seemingly marked by a coyote.