Genus Hydrangea Species serrata Cultivar 'Mak20' Tuff Stuffâ„¢ Common Name Tuff Stuffâ„¢ Mountain Hydrangea Patent ID PPAF Height 2 to 3 Feet Spread 2 to 3 Feet Habit Small, rounded habit. Moderate growth rate. Zone 5 to 9 Culture Partial to full shade. Flower Attractive, reddish pink lacecap flowers, with semi-double to double florets. Rebloomer! June until frost. Flower Color Pink Foliage Dark green, deciduous. Categories: Deciduous Shrub Hydrangea Proven Winners® Color Choice Description Photo courtesy of Proven Winners.