Genus Hydrangea Species macrophylla Cultivar 'Horwack' Pistachio Patent pp# 25577 Common Name Pistachio Next Generation Hydrangea Zone 5 to 9 Habit Rounded, to somewhat mounded habit. Moderate growth rate. Height 3 to 4 Feet Spread 3 to 4 Feet Foliage Medium green. Deciduous. Flower a wide range of colors! Pink, lime green. Begins blooming in mid summer. Rebloomer!, red, Wow Flower Color green, Pink Culture Partial shade. Categories: Deciduous Shrub Hydrangea Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window) Description The Next Generation Collection is a A Ball Ornamentals Exclusive.