Nepeta 'Six Hills Giant' (Catmint)
'Six Hills Giant' is a vigorous, upright, bushy, clump-forming, deciduous perennial with aromatic, narrowly ovate, toothed, hairy, grey-green leaves and whorled, spike-like cymes of lavender-blue flowers in summer.
Grows in any well-drained soil in sun or partial shade. May need support, particularly in more fertile soil. Cut back after flowering to maintain a compact shape and to encourage second flowering. Will reach a height of 0.9m and a spread of 0.7m after 2-5 years.