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Persian Ironwood

Parrotia persica

Hamamelidaceae · broadleaf deciduous tree · introduced

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Data Coverage 2 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

Parrotia persica (Hamamelidaceae) is a deciduous tree or large shrub native to northern Iran and Azerbaijan. It grows 20 to 40 feet tall with a rounded, spreading crown and exfoliating bark that reveals a mosaic of gray, green, white, and brown. Dark red flowers consisting mostly of stamens appear on bare branches in late winter to early spring before the foliage emerges. Fall color is exceptional, ranging through yellow, orange, red, and purple, often with multiple colors on a single tree.

Persian ironwood thrives in full sun to part shade on well-drained soil across a range of soil types. It is notably pest- and disease-free, with no significant problems documented. The species tolerates moderate drought once established. Growth rate is moderate. It is valued as a four-season specimen tree for its winter flowers, summer foliage, fall color, and winter bark display. Hardy in Zones 5a to 8b.

Quick Facts

Height
20–40 ft
Spread
15–30 ft
Growth Rate
Slow # mbg: typically 10 ft after 7-8 years
Light
Sun to Part Shade
Soil
Well Drained
Water
Moderate
Hardiness
Zone Zones 5a–8b
Bloom Time
February to March
Fall Color
Yellow, orange, red, burgundy
Origin
Northern Iran (Caspian region), southeastern Azerbaijan

Cultivars (4)

''Vanessa''
Upright, nearly fastigiate when young, maturing to a vase-shaped crown. 25-30 ft H x 15-20 ft W. Foliage emerges tinged purple; lustrous green in summer. Fall color variable yellow, orange, red.
Named Urban Tree of the Year by the Society of Municipal Arborists (2014)
''Chrishaven1'' Golden BellTower™
Tight columnar, flame-shaped form; storm-resistant branch structure. 30 ft H x 10 ft W. Fall color bright golden yellow and red-orange (distinct gold-to-apricot tones). Crimson stamens up to 1/2 inch.
Moderate to fast growth rate; reaches mature size in ~25 years
''JL Columnar'' Persian Spire™
Columnar to narrowly oval form. 25 ft H x 10 ft W. Foliage emerges solid purple in spring; matures green with purple halo margins. Two-phase fall display of yellow, orange, red, burgundy.
Full sun; moist, well-drained soil specified
''Inge's Ruby Vase'' Ruby Vase®
Narrow-upright form, narrower and more upright than species. 30 ft H x 15 ft W. New leaves emerge red; dark green summer foliage. Fall color orange-red.
Suitable for street use due to upright form. Planted by Seattle Trees for Neighborhoods program.