Mount Imlay Boronia Plant Care

Boronia imlayensis Duretto

Updated · Sources · How we source care data

Boronia imlayensis, commonly known as the Mount Imlay boronia, is a shrub of the genus Boronia which has been recorded only on the sandstone ridge near the summit of Mount Imlay, in southern New South Wales. A small shrub to 1 m (3 ft) high with pinnate leaves and pink to white flowers, it is found in eucalypt woodland.

🌳Trees🌿Shrubs🍎Fruit & Berries
Water

Every 7–14 days

Light

Full sun to partial shade

Temp

50–80°F

Humidity

40–60%

At a glance

How do you care for Mount Imlay Boronia?

Plant Mount Imlay Boronia in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–14 days until it is established. It tolerates temperatures of 50–80°F (10–27°C). Fertilize it every 6 months during the growing season.

What Is the Mount Imlay Boronia?

Mount Imlay Boronia (Boronia imlayensis) belongs to the Rutaceae family within the Boronia genus. Mount Imlay Boronia is native to eucalypt woodland.

Mount Imlay Boronia displays a compact, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Mount Imlay Boronia produces fragrant clusters of pink, white, or purple flowers.

Leaf size: approximately 2 inches.

How Often Should You Water a Mount Imlay Boronia?

Water a young or newly planted Mount Imlay Boronia every 7–14 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.

Watering Frequency

Every 7–14 days

Until established; then in dry spells

What Light Does the Mount Imlay Boronia Need?

Mount Imlay Boronia thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Mount Imlay Boronia Prefer?

Boronia imlayensis tolerates temperatures of 50–80°F. Mount Imlay Boronia prefers humidity levels of 40–60%.

Temperature

50–80°F

Humidity

40–60%

What Soil Mix Works Best for a Mount Imlay Boronia?

Well-draining, slightly acidic soil with added organic matter like compost or peat moss. Good drainage is essential for Mount Imlay Boronia to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Mount Imlay Boronia?

Feed Mount Imlay Boronia 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.

Fertilizing

Every 6 months

During the growing season

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

Where Should You Plant a Mount Imlay Boronia?

Choose a spot with full sun to partial shade and well-draining, slightly acidic soil with added organic matter like compost or peat moss. Avoid low spots where water collects after rain.

Mount Imlay Boronia is suited to USDA Zone 12a.

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.

How Far Apart Should You Plant a Mount Imlay Boronia?

Mount Imlay Boronia can spread to about 2 ft (0.6 m) and reach about 3 ft (1 m) tall. Space plants about 2 ft (0.6 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.

How Do You Prune a Mount Imlay Boronia?

Prune Mount Imlay Boronia 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.

How Do You Care for a Mount Imlay Boronia in Winter?

Mount Imlay Boronia is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

How Do You Propagate a Mount Imlay Boronia?

Mount Imlay Boronia can be propagated through softwood cuttings, seeds. Similar propagation techniques also apply to boronia acanthoclada plant care, which shares the same genus.

Is the Mount Imlay Boronia Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Mount Imlay Boronia, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.

This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.

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

What Pests and Diseases Affect the Mount Imlay Boronia?

Mount Imlay Boronia is susceptible to aphids, scale insects, 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.

What USDA Hardiness Zone Does the Mount Imlay Boronia Need?

Mount Imlay Boronia grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Mount Imlay Boronia is native to eucalypt woodland. In cooler regions, grow Mount Imlay Boronia as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Mount Imlay Boronia is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.

It belongs to the Boronia genus — compare its care with other Boronia species on PlantoScan.

Boronia is part of the Rutaceae plant family — browse all Rutaceae genera and species.

Mount Imlay Boronia thrives in bright light and direct sun — see other bright-light plants.

More Boronia Species

Other Boronia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:

Sources

  • Scientific name & taxonomy: Boronia imlayensis Duretto, family Rutaceae (first published in Muelleria 17: 69 (2003)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Mount Imlay Boronia, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
  • Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
  • Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.

Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.

PlantoScan app icon

Identify Plants Like the
Mount Imlay Boronia Instantly

Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.

Download on the App StoreGet it on Google Play

Free

to download

iOS & Android

platforms

Light & dark

mode

100,000+

species