Abundant large blue-violet flower spikes appear in May and June over coarse, wide-leaved foliage. Cut it back or deadhead after the first flowering to promote re-bloom. ‘May Night” loves moist, fast-draining soil.
Care: loves moist fast-draining soil. Allow soil to dry between thorough waterings. Remove faded flowers.
Hardiness Zone: 4-8
Mature Height: 18″ (45 cm)
Space: 15-18″ (40-45 cm)
Blooms: Summer- autumn