How to grow lavender in Australia
Lavender is beloved and frequently killed — almost always by kindness in the form of too much water and not enough drainage. Get those two things right and lavender is a tough, drought-hardy, pollinator-magnet shrub that perfumes the garden and crops flowers for years. The other key decision is variety: English lavender is the one for cooking and cold climates, while French and Spanish lavenders are more heat-tolerant and suit most of Australia. (One note for pet owners: lavender is toxic to cats, so place it thoughtfully.)
When to plant
Plant lavender in spring or autumn. Variety choice matters as much as timing — match the type to your climate.
Very difficult — humidity and wet-season rain rot lavender. Not recommended; if attempted, use Spanish lavender in pots with sharp drainage under cover from the wet.
Challenging but possible with Spanish or French lavender in raised, sharply-drained positions or pots. Humidity is the enemy — prioritise airflow.
Good, especially Perth's and Adelaide's Mediterranean climates. French, Spanish, and Grosso all thrive. Plant spring or autumn in full sun with excellent drainage.
Excellent for English lavender and Grosso. Plant spring or autumn; cold winters suit English types particularly well.
Ideal for English lavender, which is the most cold-hardy and best for culinary use. Plant in spring.
Well-suited — dry heat and low humidity are exactly what lavender likes. Provide deep but infrequent water while establishing, then little. Sharp drainage essential.
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Buy a plant (named varieties are usually cutting-grown for consistency; lavender from seed is variable).
Spacing: About 60cm apart for airflow — crowding in humid climates invites fungal death.
Depth: Plant the rootball at soil level; never plant deep or mulch against the stem.
Soil: Free-draining is everything — sandy or gravelly soil, slightly alkaline (pH 6.5–7.5). On clay or in humid zones, plant on a raised mound or in a pot with gritty mix. A gravel mulch (not organic mulch against the stem) keeps the crown dry.
Pots, raised beds, or in-ground?
Pots with a free-draining, gritty mix are the reliable choice in humid and high-rainfall areas — you control the drainage completely.
In-ground in Mediterranean and cool-temperate climates with good drainage gives the best, longest-lived plants.
Raised beds and mounds are the fix anywhere the soil is heavy — lavender simply will not tolerate wet feet.
Sunlight & water
Full sun — 6+ hours — and excellent drainage are non-negotiable. Shade and damp are what kill lavender.
Water sparingly. Establish young plants with occasional deep watering, then let them rely largely on rainfall in most climates; overwatering is the number-one cause of lavender death in Australian gardens. In pots, let the mix dry between waterings.
Prune hard after each flush of flowers — cut back into the green (never into bare old wood) to keep plants compact and prevent the woodiness that ends a lavender's productive life.
When and how to harvest
Harvest flower stems just as the lower buds open and before they fade, cutting long stems for drying. Morning, after dew has dried, gives the strongest fragrance.
Bundle and hang stems upside down in a cool, airy spot to dry. For culinary use, stick to English lavender (Lavandula angustifolia), which has the sweetest flavour. Regular harvesting doubles as light pruning and encourages repeat flushes.
Common problems
Root rot and sudden collapse from wet feet or humidity — the classic killer. Improve drainage, plant on mounds or in pots, and space for airflow.
Woodiness with age — prevented by pruning after each flowering into green growth; old woody plants rarely rejuvenate and are best replaced.
Fungal disease in humid climates — choose Spanish/French types, maximise airflow, avoid overhead watering.
Failure in the tropics — generally not the right plant for humid, wet climates; choose something else.
Companion planting
Lavender shares its sunny, free-draining, low-water preferences with rosemary and thyme, and the three make a classic low-maintenance Mediterranean herb border.
As a powerful pollinator attractor it's a great neighbour to fruiting crops like blueberry, raspberry, and citrus — drawing bees nearby (while keeping its own feet dry in its own gritty soil). Keep it away from thirsty vegetables and from cats.
Australian varieties
English (Lavandula angustifolia) — the best for culinary use and the most cold-hardy; the top choice for cool and cold climates.
French (L. dentata) — toothed grey leaves, milder scent, more heat- and humidity-tolerant; suits warm Australian climates and flowers over a long season.
Spanish (L. stoechas) — the "rabbit-ears" lavender, very common in Australia, tough and free-flowering; the most tolerant of warm, humid conditions but not for culinary use.
Grosso (L. x intermedia) — vigorous, high-oil commercial hybrid with long stems; excellent for drying and well-suited to temperate Australia.
Pet safety
Pet safety information is provided as a general guide only. If your pet has consumed any plant material, contact your vet or the Animal Poisons Helpline on 1300 869 738 immediately.
