“If you set it, cats will eat it. If you sow it, cats won’t know it” (P/3-5')(FS) Z3-9 As this saying implies, catnip planted by seed isn’t bothered as much as when it is transplanted. The aromatic gray-green foliage of catnip is a special treat, dried and stuffed for cats; and brewed to make a soothing tea for us. Entire plant produces a soft yellow gold dye.