This taller Catmint is among the hardiest of the Nepetas and most tolerant of damp conditions as well as the longest flowering. The plants are broad and vigorous, very free flowering and the color of the flower is a deeper violet blue blossoms.
Nepeta are smothered with blossoms in summer. Likes sun and dry conditions. One of the best plants to edge or underplant a rose bed. Cut back to the ground at the end of winter. Cats enjoy it as much as catnip.
Prefers dryish, not especially fertile soil. May benefit from gravel mulch. Cut back by 2/3 in July to promote reblooming in August to end of summer. Leave foliage on in winter and clean up in spring to help protect roots. Can be divided every 3 - 4 years in spring. Plant self sows readily.