Acer mono Seeds | Mono Maple
LATIN NAME: Acer mono
COMMON NAME: Mono Maple, Painted Maple
Plant Profile
The Mono Maple is a medium deciduous tree of the soapberry family, spread across the temperate forests of China, Korea, the Russian Far East and Japan, and it is one of the commonest and most useful maples of that vast range. Its leaves are five-lobed, neat and rather flat, smaller and more restrained than a Norway maple’s, and they turn a clear, butter-yellow in autumn rather than the reds of its showier relatives. The paired samaras hang at a wide angle, and the bark stays smooth and grey into maturity.
It reaches fifteen to twenty metres in the forest, where it grows as a shade-tolerant component of mixed broadleaved woodland, and in Korea and northeastern China it stands in villages and temple grounds as the standard hardy shade tree. It is a maple for people who want the genus without the theatrics.
Science & Biotechnology
In Korea the species anchors a living tradition: each spring, villages tap the trunks for the rising sap and drink it fresh or boiled down, a custom known as gorosoe, and studies of the practice have documented both its cultural depth and the sap’s mineral and amino-acid content, a northern-forest analogue of the North American maple-syrup economy that has drawn scientific attention in its own right. Forestry research across its range has studied its shade tolerance and its role as a dominant of mixed temperate forest, where it regenerates readily under canopy. Its autumn colour, yellow rather than red, reflects a different pigment chemistry from the anthocyanin-dominant red maples, one of the small physiological distinctions that make East Asian maple forests so varied in October.
Botanically it sits in the great Acer reshuffle that moved the maples into an expanded Sapindaceae, and its own boundaries with close relatives have been tested in the regional revisions.
Uses & Benefits
In the garden it is a dependable, hardy shade tree: cold-proof to the far north, tolerant of ordinary soils, neat in summer and clear yellow in autumn, and light enough in crown to let underplanting live. It suits streets, parks and large gardens, and it is a quiet alternative to the maples that demand attention.
In its Korean home the spring sap is the harvest, drunk fresh as a seasonal tonic in the villages that keep the custom. The timber is pale and workable, used for general carpentry, and the tree’s contribution to the East Asian forest, as shade, soil-cover and fuel, is the quiet kind that forestry values.
Growing from Seed
Give the seed cold stratification for eight to twelve weeks in damp vermiculite, then sow in spring into a free-draining compost, covering it to the seed’s own depth; germination follows within a few weeks of warmth. Grow the seedlings in full sun with steady moisture, potting on as they fill the container.
Line out for two or three seasons, then plant out in autumn into any deep, well-drained soil in full sun or light shade, spacing for a twenty-metre crown. Water through the first two summers and stake for the first three; after that the tree is as self-sufficient as a maple gets.
Our Take
The quiet maple of the East Asian forests: hardy, neat, clear yellow in October, and tapped in Korean villages each spring. A shade tree for gardeners who dislike drama.
Related Reading
Gardeners who grow Mono Maple often pair it with these related subjects: