1000 HEIRLOOM CATNIP Nepeta Catara Herb Flower Seeds BLOOM TIME: Mid Summer - Fall HARDINESS ZONE: 3 - 9 PLANT HEIGHT: 24 - 48" . . . PLANT SPACING: 15 - 18" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average Catnip is fragrant, and it the absolute favorite of cats! The plants also attract bees, birds, and butterflies.