Blue Catmint 'Walker's Low' (Nepeta)

This British variety was selected as the 2007 Perennial Plant of the Year. Plants are mounded and bushy in habit, with small grey-green fragrant leaves. Masses of bright-blue flowers appear on short spikes in early summer, continuing on and off through the fall if the old flowers are regularly removed. Despite the name, this is best in the middle of a border because of its mid-sized stature. Drought tolerant, once established. Flowers are attractive to butterflies.

Zones: 3 - 9