Amomyrtus luma aka Chilean Myrtle

Amomyrtus luma is an evergreen shrub or tree in the myrtle family, Myrtaceae. Its native range covers central and southern Chile into southwest Argentina. Argentine records include Chubut, Neuquén and Río Negro. It grows in a temperate climate. Common names include Chilean myrtle, cauchao, luma and pale madrono. It is not native to Britain or Ireland.

In gardens, it forms a large shrub or a tree with several stems. It reaches about 13–26 feet [4–8 metres] tall. Its spread is about 8–13 feet [2.5–4 metres]. The RHS gives a maturity period of 20–50 years. Its bushy form, peeling bark and scented leaves provide interest beyond flowering. The foliage stays on the plant through the year. Its bark and branching form suit planting as a garden feature.

Small, scented flowers grow in clusters during spring. Each flower has five petals and long stamens. Edible berries follow the flowers, starting red and turning black. The fruits are about the size of small blackcurrants. They have a strong scent and hold many seeds. They can be eaten raw or cooked. Plants For A Future gives their food value three out of five. It lists no known hazards, though that does not establish safety for pets. It records no medicinal uses.

Grow this species in full sun with shelter from cold, drying winds. A south-facing or west-facing site fits the RHS guidance. It prefers loam with moderate fertility and good drainage. Keep the soil moist rather than allowing it to stay waterlogged. It accepts acid, neutral and alkaline soil. The RHS rates it H3 for UK conditions. This suits coastal districts and other mild parts of Britain. The rating covers minimum temperatures of about 23–34°F [−5 to 1°C].

Suggested settings include courtyards, coastal gardens and informal borders beside walls. It also suits a sunny woodland edge or a sheltered Mediterranean-style garden. Its scented flowers and leaves add value near garden seating. The RHS lists few usual pest or disease problems. For propagation, sow seed in pots in a cold frame during spring. Another option is semi-ripe cuttings taken in late summer. Use gentle heat beneath the cuttings to help them root.