Japanese Maple

Arbor Walk #136, TreeKeeper ID #6159

The Japanese Maple has been cultivated in and around its native range for hundreds of years, and since the 1800s, has been symbolic of Japanese Gardens to Western observers. This tree is quite beautiful, small in stature with delicate and intricate-looking leaves. The ‘Wolff’ cultivar is particularly known for its striking bright red leaves, which provide vibrancy to its surroundings.

Common Name(s)Japanese Maple
Latin NameAcer palmatum
Indigenous Name(s)
Cultivar/Variety‘Wolff’
Commercial NameEMPEROR 1
Global Distribution

Coming soon

Where to find Arbor Walk #136 on WashU campus
Our Japanese 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 Japanese Maple through time
Standard Measurements
YearHeight (m)DBH (cm)Crown Diameter N-S (m)Crown Diameter E-W (m)Average Crown Diameter (m)
20233.952.132.152.14
Nests and Pests
YearDescription
2023N/A
How to identify a Japanese Maple
Leaf Identification

The leaves of the Japanese Maple are typically 2″ to 5″ long and can range in color from green to deep red to purple. The leaf shape is star-shaped, and the venation is palmate. The margins are serrated and has 5 to 7 deep, palmate lobes. It has an opposite arrangement.

Twig and Bud Identification

The twigs of the Japanese Maple are smooth (glabrous) and very slender. They can be green or red. The buds are conical, and the base of the buds are usually covered by a tan, fuzzy fringe.

Bark Identification

The Japanese Maple’s bark is smooth, light gray, and can be slightly fluted.

Fruit Identification

The fruit of the Japanese Maple is a 3/4″ to 1″ long double samara (winged papery seed coat). It has divergent (90 degrees) wings and has a red-brown color. The samaras ripen in fall.

Flower Identification

The Japanese Maple is monoecious. It is not showy, but they are small, red to purple hanging clusters. The flowers bloom in mid-spring.

‘Wolff’ Identification

Japanese Maple ‘Wolff’ is notable for its deeply lobed leaves and bright red leaves in fall.

Relationship of Acer palmatum to other species in the arboretum
Additional resources on the Japanese Maple