50 Blue CATMINT Nepeta Mussinii HERB Flower Seeds BLOOM TIME: All Summer HARDINESS ZONE: 4 - 9 PLANT HEIGHT: 12" . . . PLANT SPACING: 20" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average - Dry Catmint is a fast spreading ground cover. It is excellent for rock gardens, and will bloom the first year from seed. It attracts cats like catnip, and it also attracts HUMMINGBIRDS!