Catmint, Junior Walker™ CatmintJunior Walker Catmint is a compact herbaceous perennial with aromatic grey green foliage and semi cascading habit. The soft lavender flower spikes that bloom in late summer and through fall are sterile. In southern states grows best with afternoon shade and dry, well drained soils. Type: Perennial Height: 1 1. 5 Spread: 2. 5 3 Spacing: 2. 5 USDA Hardiness Zone: 5 9 Culture: Full Sun, Part Sun Bloom Color: Purple Season of Interest: Summer, Fall