Rosemary is a perennial Mediterranean shrub that thrives in Australia's dry, sunny climate, particularly in south-west Western Australia and South Australia, which share similar Mediterranean conditions. It requires almost no water once established, deters brassica pests as a companion plant, and provides year-round harvests for cooking.
Plant Spacing
60 cm apart
80 cm between rows
Days to Harvest
Ongoing from establishment; cuttings produce harvestable growth in 60-90 days
Germination: 14-21 days (seed); immediate (cutting)
Sun Needs
Full sun (6+ hours daily), essential for aromatic intensity
Water Needs
Low once established, drought-tolerant; water weekly in establishment phase
Soil pH
6.0-8.0
Expected Yield
Ongoing; an established rosemary bush can produce kilograms of fresh herb per year
Planting times vary significantly across Australia's five climate zones. Find your zone below for the best planting windows.
| Climate Zone | Best Planting Months |
|---|---|
| Tropical (Darwin, Cairns) | April-October (avoid wet season; susceptible to root rot in humidity) |
| Subtropical (Brisbane, Northern NSW) | March-October (challenging in humid coastal areas) |
| Temperate (Sydney, Melbourne, Perth) | Year-round |
| Cool/Alpine (Canberra, Hobart, high country) | Year-round (frost-tolerant once established) |
| Arid (Alice Springs, outback) | Year-round (excellent in hot, dry climates) |
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Rosemary is best established from semi-hardwood cuttings rather than seed, cuttings root easily and produce a plant true to variety, whereas seed-grown rosemary is variable. Take 10-15cm cuttings from new growth in autumn or spring, strip the lower leaves, and insert into a free-draining propagating mix. Roots develop within 4-8 weeks.
In raised beds, rosemary is best positioned as a permanent resident at one end of a long bed, its woody shrub habit and perennial nature means it will be there for years, and planning around it from the start avoids disruption.
Rosemary demands free-draining soil above all else, it will rot in heavy, wet, or poorly drained conditions. The free-draining nature of raised beds makes them ideal for rosemary, especially in high-rainfall areas. Never overwater rosemary or allow it to sit in water.
Once established, rosemary requires almost no care, a hard prune after flowering in spring to maintain shape and encourage fresh growth is the primary management task. Do not feed heavily; rich soil produces lush but less aromatic growth.
Choose varieties for purpose: 'Prostrate Rosemary' is low-growing and cascades beautifully over bed edges; 'Tuscan Blue' and 'Miss Jessop's Upright' are tall and upright with excellent flavour; 'Blue Lagoon' is compact and suited to smaller beds.
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Plant Planner calculates how many rosemary plants your family needs, assigns them to the right beds, and generates a personalised planting schedule for your climate zone.
These plants make excellent neighbours for rosemary in your raised beds, they help deter pests, improve pollination, or enhance growing conditions.
Avoid planting rosemary near these crops, they can inhibit each other's growth, attract shared pests, or compete aggressively.
Phytophthora root rot is the most serious problem, caused by waterlogged soil.
Ensure excellent drainage, especially in clay-based gardens.
Rosemary beetle is a minor pest that can defoliate plants, handpick adults and larvae.
Powdery mildew occasionally affects plants in humid, shaded positions, increase sun exposure and improve airflow.
Spittlebug (froghoppers) creates frothy masses on stems; wash off with water.
Harvest rosemary by snipping green stem tips 10-15cm long. The woody stems below do not regrow well when cut, always harvest green, current-season growth. Rosemary can be harvested year-round in most Australian climates. For large harvests, prune up to one-third of the plant after flowering in spring.
Ongoing; an established rosemary bush can produce kilograms of fresh herb per year
Yield depends on variety, growing conditions, and management. These are typical results for well-maintained Australian raised beds.
Plant Planner checks every crop assignment against the full companion database, it knows that Rosemary grows well with Broccoli and Cabbage and warns you about antagonists automatically.
Unlock Free1 plant is more than sufficient for a family of 4; rosemary is rarely needed in large quantities
These estimates are based on average Australian household consumption. Adjust up if you plan to preserve, freeze, or use heavily; adjust down for occasional use.
Rosemary germinates in 14-21 days (seed); immediate (cutting) and is ready to harvest in Ongoing from establishment; cuttings produce harvestable growth in 60-90 days. Harvest rosemary by snipping green stem tips 10-15cm long.
Space rosemary plants 60 cm apart, with 80 cm between rows. Correct spacing gives each plant room for airflow and root development and is one of the easiest ways to lift your yield in a raised bed.
Full sun (6+ hours daily), essential for aromatic intensity. Low once established, drought-tolerant; water weekly in establishment phase.
It depends on your climate zone. In temperate areas (Sydney, Melbourne, Perth, Adelaide) plant rosemary Year-round. Other zones: tropical, April-October (avoid wet season; susceptible to root rot in humidity); subtropical, March-October (challenging in humid coastal areas); cool, Year-round (frost-tolerant once established); arid, Year-round (excellent in hot, dry climates).
Rosemary grows well alongside Broccoli, Cabbage, Kale, Beans, Carrot, Sage. Keep it away from Cucumber, Pumpkin, which can compete with it or attract shared pests.
1 plant is more than sufficient for a family of 4; rosemary is rarely needed in large quantities
Plant Planner automatically calculates how many rosemary plants your family needs, assigns them to the right beds, and generates a personalised planting schedule for your climate zone.
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