'Mikawa yatsubusa' is a very small and compact Japanese maple cultivar in the maple family (Sapindaceae). The plant is noted for its layered foliage and almost contorted look, but especially for its fall colors. Its name means "a small cluster of three rivers". Japanese maple parent plants are native to southeast Korea and central and south Japan. Acer is Latin for sharp and palmatum means shaped like a hand, referring to the leaves. This slow-growing tree will grow to 4-6 feet tall and 4 feet wide and has a multi-branched form with dense growth. Plant in partial shade to full sun in moist, well-drained, acidic to neutral soil. It is more heat tolerant than most Japanese maples. Early in spring, its leaves are yellow-green, turning medium green in summer and yellow-gold in fall, with the serrated edges of the outer leaves a showy bright red. It is suitable for small areas, containers, Asian, and fairy gardens and is often used for bonsai. Insects, Diseases, and Other Plant Problems: Chewing insects and aphids may cause leaf damage. Temperature extremes in late winter and spring can seriously damage foliage and even younger branches. Wind, drought, or underwatering can cause leaf scorch. It self-seeds easily so can spread and become weedy in the landscape. See potential insect and disease problem fact sheets to the left. The Clemson Cooperative Extension Home and Garden Information Center has a factsheet on common maple diseases and insect pests. 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. More information on Acer palmatum .
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 sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; High Organic Matter; Loam (Silt); Sand
Soil pH
Acid (<6.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist
Available space
3 feet-6 feet
NC region
Coastal; Mountains; Piedmont
Growth rate
Slow
Maintenance
High
Canopy layer
2 - Understory
Form & Appearance
Habit / form
Dense; Multi-stemmed
Texture
Fine
Foliage
Deciduous
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Palmasect
Leaf margin
Lobed; Serrate
Leaf value
Showy
Leaf size
3-6 inches long
Hairs present
No
Leaf detail
Leaves are 2 to 5 in., opposite, and simple with 5 to 9 lobes and red petioles. Most are deeply lobed with serrated edges. Their color varies from green during summer to yellow, orange to red fall color.
Fall color
Gold/Yellow; Orange; Red/Burgundy
Fruit type
Samara
Bark color
Green; Light Brown
Stem color
Green
Wildlife & Ecology
Native status
Unknown
Wildlife value
Members of the genus Acer support Imperial Moth (Eacles imperialis) larvae which have one brood per season and appear from April-October in the south. Adult Imperial Moths do not feed. Small song birds are attracted to this plant.
Attracts
Moths; Songbirds
Food & Medicine
Fruit type
Samara
Landscape Use
Landscape location
Container; Small Space
Landscape theme
Asian Garden; Nighttime Garden; Pollinator Garden
Design feature
Small Tree; Specimen
Garden tags
#self-seeding #heat tolerant #slow growing #bonsai #small tree #colorful leaves #nighttime garden #container plant #bird friendly #high maintenance #small spaces #fall color red #fall color orange #landscape plant sleuths course #larval host plant #weedy #dense growth
Problems & Resistance
Insect problems
Japanese Maple Scale, Lopholeucaspis japonica (Cockerell), Hemiptera: Diaspididae; Aphids on Ornamental Landscape Plants; Maple Pest Management Calendar; Japanese Maple Leafhopper; Common Insect Pests of Maple in North Carolina