Three-Flowered Maple

Arbor Walk #100, Treekeeper #6600

Three-Flowered Maple is a small understory tree and grows to 30′ tall. Features of this tree include exfoliating bark and fall color of orange to red foliage. Although adaptive to Missouri, its native range is Northeast China, North Korea, and South Korea. It grows in average medium well drained soil in full sun to part shade and prefers moist, acidic soils.

Common NameThree-Flowered Maple
Latin NameAcer triflorum
Indigenous Name(s) 
Cultivar/Variety 
Commercial Name 
Global Distribution
Where to find Arbor Walk #100 on WashU campus
Our Three-Flowered Maple in space
GPS Coordinates

N/A

Percent Concrete

N/A

Distance to Buildings
YearClose Building #1Close Building #2Close Building #3
Distance to Other Species
YearClose Species #1Close Species # 2Close Species # 3
Our Three-Flowered Maple through time
Standard Measurements
YearHeight (m)DBH (cm)Caliper (m)Crown Diameter N-S (m)Crown Diameter E-W (m)Average Crown Diameter (m)
20235.25N/A2.371.992.18
Nests and Pests
YearDescription
2023N/A
How to identify a Three-Flowered Maple
Leaf Identification

The leaves of the Three-Flowered Maple are compound, oppositely arranged on the stem, and unlobed. The leaves are medium-dark green and trifoliate (each leaf has three leaflets), turning a bright golden yellow/orange in the fall. Each leaflet is about 1-3″ and is elliptical in shape. The leaves have long trichomes along the end of the petiole and the base of the leaflet midveins. The leaflets may be pubescent (hairy) when young.

Twig and Bud Identification

The twig is orange-brown with pale vertical streaks and lenticels (pores). Leaves are arranged oppositely, and the twig is not zig zag. The terminal buds are small, dark, scaled, and in sets of three. The middle bud is the largest.

Bark Identification

The bark is smooth and tan when young, but as it matures it will begin to peel horizontally along the entire length of its bark. This peeling is often incomplete but happens over multiple layers, creating a clawed, shredded appearance.

Fruit Identification

The Three-Flowered Maple is a pubescent double samara (seed covered by papery, winged seed coat), with the two samaras angled 45 degrees apart from each other. The samaras mature in fall, where they turn brown.

Flower Identification

The flowers are inconspicuous, light green, and hanging from short peduncles. They are in clusters of three, as the common name of the tree suggests. They bloom in mid-spring.

Relationship of Acer triflorum to other species in the arboretum
Additional resources on the Three-Flowered Maple