24 to 30" tall mound of gray-green foliage on square stems. Leaves are aromatic when crushed. Spikes of small lavender flowers repeat-bloom from spring to frost if deadheaded.
A very popular garden perennial. "This plant is apparently an accidental hybrid between N. racemosa and N. nepetella that occurred in the lower part of Mrs. Walker’s garden in Ireland. Mrs. Patricia Taylor spotted its potential and took cuttings in the 1970’s. Four Seasons Nursery in Norwich, England, finally introduced it to the trade in 1988. The first hybrids of these two species were made by Dutch nurseryman J. H. Faassen in the 1930s, so the hybrid genus is named in his honor." (Klingaman) The Perennial Plant Association's 2007 Perennial of the Year.