Color: Pink Flower Size: 2.5-3.5″ (6-9cm) Flowering Period: May & June Mature Height: 15-20′ (4.5-6m) Pruning Group: A Planting Aspect: Sun/ Partial Sun / Bright Shade USDA Zone: 7 Foliage: Deciduous Fragrant: Yes Price Group: Standard About Montana Fragrant Spring Masses of 2.5-3.5″ (6-9cm) clear pink fragrant blooms in May and early June. Mature height 15-20′ (4.5-6m). Pruning group A.