Paperbark Maple

Acer griseum

Sapindaceae, Aceraceae · broadleaf deciduous tree · introduced

Last updated

A slow-growing deciduous tree from central China, 20 to 30 feet tall, famous for its bark. The outer bark is copper-red to cinnamon-brown, exfoliating in large, papery curls that remain attached, creating year-round ornamental texture. The bark becomes more purple-brown with age. Leaves are opposite and trifoliate (compound with three leaflets), 7 to 13 cm long, the middle leaflet short-stalked and coarsely toothed, the laterals nearly stalkless. Blue-green above, pale to whitish below. Flowers are greenish-yellow, small, in 2.5 cm clusters in April. Samaras diverge at 60 to 90 degrees and persist into winter; approximately 95% of seeds are not viable, making propagation notoriously difficult. Fall color ranges from red-brown to striking red.

Hardy to Zone 4a. Full sun to part shade. Adaptable to varied soils including clay; prefers moist, well-drained conditions. Low maintenance. The slow growth rate means it will not outgrow a modest yard, making it one of the few maples appropriate for a fifteen-foot planting strip or patio-adjacent position. No named cultivars in the trade. Nineteen diseases and fifteen pests documented at genus level; established specimens in good sites rarely show serious problems. Nursery availability is inconsistent due to propagation difficulty.

Quick Facts

Height
20–30 ft
Spread
15-25 ft
Growth Rate
Slow
Light
Full Sun to Part Shade
Soil
Well Drained To Moist
Water
Moderate
Hardiness
Zone Zones 4a–8b
Bloom Time
April
Fall Color
Brown, red
Origin
Central China
Watch for this season

Primary Spore Release

Spring Spore Germination and Infection

Spore Release (Fall & Spring Rains)

Phyllosticta Leaf SpotHigh

Primary Spore Release

+ 10 more — see full disease and pest lists below

Field Observations

Acer griseum - bud swell
Field Observation
Acer griseum · Paperbark Maple
bud swell
April 20, 2026 · Lake Wilderness Arboretum · 1,509 GDD₃₂ · BBCH 03

Phenological Calendar

Stage Typical Window
Bud swell BBCH 03

Diseases: Regionally Documented (17)

Pests: Regionally Documented (13)

Exfoliating cinnamon bark is particularly visible and appealing during dormant season in Puget Sound landscapes.

— Chris Welch, ISA Certified Arborist

Data Maturity
Structured Multiple sources. Expert review underway.