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Iron Tree

Parrotia persica (par-RO-ti-a PER-si-ka)

Family: Hamamelidaceae Non-native Understory (15-40 ft)

The Persian ironwood is small to a medium-sized, slow-growing, deciduous tree that grows up to 15 to 30 feet in height and is equally as wide. It has a rounded, upright habit with spreading branches, and will often have several trunks. It may also be grown as a large multi-stemmed shrub that reaches 15 feet in height. From late winter to early spring, the apetalous flowers appear. The flowers have red stamens and brownish bracts. The leaves emerge after the flowers and initially appear reddish-purple. They are oval to oblong and become a glossy medium to dark green during the summer. The fall color ranges from yellow, and orange to burgundy. On mature trees, the bark exfoliates and exhibits patches of green, white, and tan. It provides multi-season interest and is a wonderful and underused tree. This tree is native to Northern Iran in the lower Alborz Mountains. It has been widely cultivated in Europe and the United States. The genus name, Parrotia , is in honor of a German naturalist, F.W. Parrot. The specific epithet, persica , means Persian. The Persian Ironwood prefers full sun, and moist, well-drained, loamy, acidic soils. It will tolerate light shade and is adaptable to many soil types such as clay and sand. It is drought-tolerant and urban pollution tolerant. This tree is a member of the Hamamelidaceae or witch hazel family. The flowers of this tree are rather insignificant, but the foliage and the bark of this tree more than compensate for its lack of floral display. Other attributes include heat, drought, air pollution, poor soil tolerance, and lack of insect pests and diseases. The Persian Ironwood is a wonderful underused tree that would be a great substitute for the Bradford Pear in the home landscape. Seasons of Interest: Bark: Winter Bloom: Spring Foliage: Spring, Summer, and Fall Quick ID Hints: the bark of mature trees exfoliates and exhibits green, white, and tan patches apetalous flowers with red stamens and brown bracts emerge in late winter to early spring leaves follow the flower and emerge in shades of reddish-purple and become medium to dark green during the summer and orange to burgundy in the fall Insects, Diseases, and Other Plant Problems: This tree or shrub has no serious insect or disease problems. VIDEO created by Andy Pulte for “Landscape Plant Identification, Taxonomy, and Morphology” a plant identification course offered by the Department of Plant Sciences, University of Tennessee.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 61 attributes.

How it fits the guild

Guild layer 2 - Understory (15-40 ft) Optimal soil pH Acid (<6.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Full plant profile

Growing Conditions
Plant type
Shrub; Tree
Life cycle
Woody
USDA zones
4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Loam (Silt)
Soil pH
Acid (<6.0)
Soil drainage
Good Drainage | Moist
Available space
24-60 feet; more than 60 feet
NC region
Mountains; Piedmont
Mature size
Height: 15 ft. 0 in. - 30 ft. 0 in. | Width: 15 ft. 0 in. - 30 ft. 0 in.
Growth rate
Slow
Maintenance
Medium
Canopy layer
2 - Understory (15-40 ft)
Form & Appearance
Habit / form
Ascending; Erect; Multi-stemmed; Rounded; Vase
Texture
Fine
Foliage
Deciduous
Leaf color
Green; Purple/Lavender; Red/Burgundy
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Oblong; Obovate; Ovate
Leaf margin
Crenate; Dentate; Undulate
Leaf feel
Glossy; Papery
Leaf value
Showy
Leaf size
3-6 inches long, 1-3 inches wide
Hairs present
No
Leaf detail
The leaves are simple, alternate, oval to obovate-oblong, and measure 2.5 to 4.5 inches long and 1 to 2.5 inches wide. Above the middle of the leaf, the margins are coarsely crenate to dentate and undulate. In the spring the leaves emerge as reddish purple. By summer the leaves are medium to dark green on the upper surface and light green beneath. The fall foliage is bright yellow, orange, to red.
Fall color
Gold/Yellow; Orange; Red/Burgundy
Flower color
Red/Burgundy
Flower form
Insignificant
Flower size
< 1 inch
Flower detail
The flowers are 0.5 inches wide, and apetalous with 5 to 15 red stamens and brown bracts. They bloom in late winter and early spring before the leaves emerge.
Bloom time
Spring; Winter
Fruit color
Brown/Copper
Fruit type
Capsule
Fruit size
< 1 inch long, < 1 inch wide
Fruit detail
The fruit is a brown, two-valve capsule. When the fruit matures, the pod will open, and it will contain one shiny brown seed.
Bark color
Green; Light Brown; White
Bark detail
The bark on mature trees exfoliates and produces shades of green, white, and tannish-brown.
Stem color
Brown/Copper
Stem detail
The twigs are brown and thin.
Wildlife & Ecology
Native status
Non-native
Origin
Southeast Azerbaijan to Northern Iran
Distribution
Native: Iran and Transcaucasus; Introduced: Great Britain, United States, and Uzbekistan.
Food & Medicine
Fruit type
Capsule
Landscape Use
Landscape location
Lawn; Patio
Landscape theme
Cottage Garden
Design feature
Flowering Tree; Foundation Planting; Specimen; Street Tree
Garden tags
#deciduous #slow growing #fall color #landscape plant sleuths course #flowering tree #air pollution tolerant #lawn #street tree #specimen #drought tolerant #exfoliating bark #disease resistant #full sun #spring interest #fall interest #acidic soils tolerant #flowering shrub #cottage garden #pest resistant #winter interest #HS304 #poor soil tolerant
Problems & Resistance
Resistant to
Drought; Heat; Pollution; Poor Soil
Propagation
Stem Cutting

Planted at Hunnicutt

Nobody’s planted this one yet.