Acer triflorum Seeds | Three-flowered Maple

Three-flowered Maple (Acer triflorum) with trifoliate leaves, peeling bark and orange autumn colour — Three-flowered Maple (*Acer triflorum*): Sapindaceae, the collector’s maple with peeling bark and a double-dormant seed.

LATIN NAME: Acer triflorum

COMMON NAME: Three-Flowered Maple

Plant Profile

The Three-flowered Maple is the connoisseur’s tree of the maple world. A small, slow, beautifully built species of eight to ten metres from northeastern China and Korea, it carries trifoliate leaves, three leaflets to a stalk rather than the maple’s usual hand, whose autumn turn is rated among the very best of any maple: deep orange flushing to scarlet and holding for weeks in cool autumns.

The second feature is the bark. On older trunks and branches it exfoliates in curls and vertical strips of tan and cinnamon, giving the tree winter presence that most maples lack. The name records the flowers: small yellow-green clusters in threes, opening with the leaves in spring, modest but numerous.

Science & Biotechnology

Ornamental plant evaluations across North American and European collections consistently rank it at the top of small maples for four-season quality, and its relative scarcity in commerce traces to propagation, not merit. The seed is the reason: like many slow maples it carries double dormancy, with the embryo requiring warmth to develop followed by a long cold period, and naive spring sowings sit idle for a year.

Systematically it stands in the trifoliate-leaved section of Acer, a small group of refined species, and its bark exfoliation, shared with the paper-bark maple, features in comparative studies of bark morphology in the genus. Its wood is of no commercial consequence, which may be why the species escaped wider attention for so long.

Uses & Benefits

In the garden it is a specimen for patient gardeners: four seasons of interest, no pest problems of consequence, hardiness well into cold-winter country, and a mature scale that respects a small property. It suits woodland edges, courtyard gardens and any planting designed around autumn colour and winter bark. Because it holds its leaves late and drops them cleanly, autumn cleanup is one wheelbarrow rather than five.

As breeding material it offers cold hardiness and refined form, and collector demand has slowly built a nursery trade around seed-raised stock, every seedling of which is its own small experiment.

Growing from Seed

Plan a two-stage stratification. Hold fresh seed warm and damp at twenty degrees for eight to twelve weeks, then move it to refrigeration at two to four degrees for another three to four months. Sow in spring; germination follows over several weeks, unevenly. Fresh seed, kept moist from the moment the samaras are gathered, responds best of all.

Seedlings grow slowly for the first two years, then settle into a steady, if never rapid, pace. Give them bright shade with afternoon shelter in hot climates, deep pots for the young root, and transplant only when young, since established trees resent moving. Patience is the price; the autumn show is the refund.

Our Take

Small, slow and worth every season of the wait: bark in winter, scarlet in autumn, and nothing to fear from cold. The seed’s warm-then-cold schedule is not optional, since skipping it costs a year.

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