Panther Dark Blue Catmint

Panther Dark Blue is a compact, branched Japanese catmint with dark blue flowers and fragrant foliage. Park Seed lists the selection as Nepeta subsessilis ‘Panther Dark Blue’, with mature plants about 8 inches tall and 10 inches wide, blooming from early summer into early fall. ## Garden Use The neat habit suits the front of a sunny or partly shaded border and smaller garden spaces. Its blue flowers provide a long warm-season display, while the aromatic leaves add a sensory feature. The nursery lists the plant for USDA zones 4–8 and describes it as suitable for dry to moist, well-drained soil. ## Growing Conditions Choose a site with full sun or part shade and freely draining soil. Water during establishment and prolonged dry spells; avoid persistently soggy conditions. Park Seed notes that the flowers are self-cleaning and that the plant attracts bees and butterflies. ## Maintenance Allow the plant room to form its naturally branched mound. Remove damaged stems as needed and trim lightly after flowering if shaping is desired. See the [Park Seed Panther Dark Blue profile](https://www.parkseed.com/products/panther-dark-blue-japanese-catmint-seeds-52167-pk-p1) for selection details and cultivation guidance.