Scientific Name: Hydrangea paniculata
Common Name: pee gee hydrangea
Family Name: Hydrangeaceae
Origin: S.E. Asia / Japan / China
Hardiness Zone: Zone 3: (-40 to -34 °C)
Plant Type: Shrub - deciduous
Mature Size: 2 - 3m x 2 - 3m (height x width)
Habit: Arching, Spreading, Stiffly upright, Twiggy
Form: Round, Vase
Texture: Medium - coarse
Landscape Uses: Accent plant, Cut flower or foliage, Dried flower or fruit, Fall interest, Group or mass planting, Mixed shrub border, Specimen plant, Tall background
Exposure: Full sun, Filtered shade
Soil or Media: Well-drained
Leaves: Simple, Opposite, Whorled, Heavily veined, Pinnate venation, Glabrous, Elliptic, Serrate
Flowers: Thyrse, White, Pink, Jul-Aug-Sep
Fruit: Capsule, Brown, Oct-Nov, (Persistent)
Key ID Features:
Twiggy; leaves opposite or whorled near branch tips (3 per node), ovate-elliptical, most blades 5-14cm long x 4-6cm wide, margins mostly serrate (entire towards base), petioles 1-3cm long; inflorescences panicle-like (thryse), cone-shaped, 15-22cm long x 10-27cm wide; florets either bisexual (7-9mm wide, 5 petals ~3mm long) or sterile outer forets with 4 broadly elliptical to ovate petal-like sepals 1-2.5cm long x 0.5-1.5cm wide. Winter ID: lenticels rounded; buds tiny and in whorls of 3; large, persistent conical inflorescences (if not pruned).