Machilus thunbergii Seeds | Red Machilus

Red Machilus (Machilus thunbergii) with glossy evergreen leaves and reddish new growth on a forest tree — Red Machilus (*Machilus thunbergii*): Lauraceae, the bay laurel of Japan’s coasts and the binder of incense.

LATIN NAME: Machilus thunbergii

COMMON NAME: Red Machilus

Plant Profile

The Red Machilus is a dense, evergreen tree of the laurel family from the warm-temperate coasts and forests of China, Korea, Taiwan and Japan, growing ten to twenty metres with a rounded crown of glossy, oval leaves that flush a deep red as each new growth emerges, the show that gives the tree its common name. The small, greenish-yellow flowers open in spring, and the dark, one-seeded fruits ripen in autumn for the birds.

It is the dominant evergreen broadleaf of much of southern Japan’s coastal forest, salt-tolerant where most laurels are not, and it stands in temple grounds and seafront parks as the standard handsome evergreen of the region. The bark has a quiet industrial fame that most visitors to a Japanese temple never learn.

Science & Biotechnology

Its bark is the binding material of Japanese incense: ground tabu, as the tree is called in Japan, is the traditional powder that holds the aromatic ingredients of senko sticks together, and the craft’s reliance on this single species has made its supply a subject of study in the incense industry’s literature. Ecologically it anchors the coastal evergreen broadleaved forest of warm-temperate East Asia, and salt-spray tolerance studies have ranked it among the most reliable broadleaves for exposed seafront sites. Its systematic position carries a modern footnote: molecular work has folded the genus Machilus into a broad Persea, the avocado genus, though the ornamental trade and the floras of the region continue to use Machilus for practical reasons.

Its red flush, like that of many tropical laurels, is an anti-herbivore trait noted in forest studies, protecting young leaves before they harden.

Uses & Benefits

In the garden it is a salt-proof, glossy evergreen for coastal and warm-temperate planting: a dense shade tree, a wind-resistant screen, and one of the few broadleaves that shrugs off sea air entirely. Inland it is equally content, and its red flushes through the growing season give it an ornamental season most evergreens lack.

The bark’s incense role is a living craft use, and the tree’s timber serves local construction in its range. Its main service, though, is structural: the evergreen backbone of the East Asian coastal forest, doing quietly for seafronts what oaks do inland.

Growing from Seed

Clean the pulp from ripe fruit and sow the fresh seed at once into a humus-rich, free-draining mix, covering it to its own depth and holding it at 20 to 25 °C with even moisture; laurel seed loses viability fast, so delay wastes the crop. Germination follows in four to eight weeks. Shade the seedlings through their first summer.

Pot on as the root deepens and plant out into deep, moist, well-drained soil in full sun or light shade, spacing for a twenty-metre crown, in a climate where winters stay mild or maritime. Water through the first two summers and mulch annually; after establishment the tree stands salt, wind and drought with the calm of its coastal origins.

Our Take

The salt-proof evergreen of Japan’s coasts, red-flushed and glossy, whose ground bark binds the incense of its temples. A dependable broadleaf for seafront and warm garden alike.

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