Australian Bugle Plant Care

Australian Bugle (Ajuga australis) belongs to the Lamiaceae family within the Ajuga genus. Australian Bugle is native to Eastern Australia. Australian Bugle is also known as Austral Bugle.

Australian Bugle displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1.5 ft. Australian Bugle produces small, tubular flowers in shades of blue, purple, or white.

Leaf size: approximately 2 inches.

Water a young or newly planted Australian Bugle every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Australian Bugle thrives in part shade to full shade. The optimal light range is 100–500 lux. Avoid placing Australian Bugle in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Ajuga australis tolerates temperatures of 50–75°F. Australian Bugle prefers humidity levels of 40–60%.

Well-draining, fertile soil with a mix of organic matter like compost or peat moss. Good drainage is essential for Australian Bugle to prevent waterlogging, which leads to root rot and fungal issues.

Feed Australian Bugle every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with part shade to full shade and well-draining, fertile soil with a mix of organic matter like compost or peat moss. Avoid low spots where water collects after rain.

Australian Bugle is suited to USDA Zone 8a – 10b.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

Australian Bugle can spread to about 2 ft (0.5 m) and reach about 1 ft (0 m) tall. Space plants about 2 ft (0.5 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

Prune Australian Bugle while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

Australian Bugle is hardy down to USDA zone 8a, so once established it can stay outdoors through winter in that zone and warmer ones.

Water deeply in late autumn before the ground freezes, and spread a 5–8 cm (2–3 in) layer of mulch over the root zone, keeping it away from the trunk.

Young and container-grown shrubs need extra protection: roots in a pot freeze much more easily than roots in the ground.

Australian Bugle can be propagated through division, seeds. Similar propagation techniques also apply to bugleweed plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Australian Bugle is susceptible to aphids, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Australian Bugle grows outdoors in USDA Zone 8a – 10b. It survives winters down to planting zone 8a. Australian Bugle is native to Eastern Australia.