Leptospermum laevigatum aka Australian Myrtle

Leptospermum laevigatum is an evergreen shrub in the myrtle family, Myrtaceae. Common names include coast tea tree and Australian teatree. It comes from Australia, with New South Wales and Victoria listed as its native range. It grows on coastal dunes across southern and southeastern Australia. Some plants also grow inland where the soil is sandy. Coastal plants can face harsh winds and salt exposure. The species is not native to Britain or Ireland.

Its size varies with the site and exposure. The source gives a height of 30 feet [9 metres]. In harsh, windswept places, plants may reach just 3 feet [1 metre]. The shrub keeps its leaves throughout the year. Each flower has both male and female parts. Insects pollinate the flowers, and bees visit the plant. This makes it useful where gardeners aim to support wildlife. Its evergreen growth also suits hedges and sunny woodland edges.

Grow it in full sun, rather than a shaded spot. It prefers a light sandy loam with good drainage. It can also grow in loam or clay of reasonable quality. Mildly acid to neutral soil suits it. The source describes a preference for moist soil. Although it tolerates coastal exposure, shelter from drying winds is preferred. This includes both hot winds and cold ones. Outdoor growing in Britain is limited to mild areas. The listed USDA hardiness range is zones 8–11. Young plants need cold protection during their first winter or two outdoors.

Choose the planting spot with care, as roots dislike disturbance. Old wood does not produce fresh growth after cutting. This limits how far gardeners can cut back an established hedge. The plant can help hold loose sand in place. That role makes it useful for stabilising sandy ground. It also serves as a hedge in coastal gardens. Seeds and cuttings offer ways to raise new plants. Sow seed in spring under glass, with only a thin covering. Keep seedlings under glass through at least their first winter.

Dried leaves can be used to make tea. Plants For A Future gives this a low edible-use rating. It lists no known medicinal uses and no known hazards. That hazard entry does not establish safety for pets or every use.