When to Plant Rosemary in Sydney, Warm Temperate Guide

Sow September to November. Right now in September you can sow.

Published · Last reviewed · By Garden Buddy
Growing advice is reviewed by hand. Planting dates, current conditions and prices on this page update daily.

This Rosemary guide is written for the Warm Temperate zone, which takes in Sydney, Newcastle and Wollongong. Somewhere else? Your postcode picks the right one.

Not your zone? Cairns Brisbane Melbourne Canberra Alice Springs Perth

Also handy: will it frost this week? and what grows in shade.

Rosemary

Photo: Wikimedia Commons

Iconic Mediterranean evergreen shrub with intensely aromatic needle-like leaves. Extremely drought-tolerant once established. HATES wet feet and humidity. Root rot kills more rosemary in Australia than anything else. Forms a woody shrub 1-1.5m tall. Long-lived (10+ years) in suitable conditions. Upright and prostrate forms available.

Planting Calendar for Warm Temperate

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- - - - - - - - D D D -

S = Seed Tray   T = Transplant   D = Direct Sow

Want a nudge when it is Rosemary sowing time in Sydney?

One email a week with what is worth planting in the Warm Temperate zone right now, Rosemary included, plus which veg has jumped in price at the supermarket. Free, and you can stop it in one click.

Current Growing Conditions

Soil temperature: 17.0°C (optimal range: 15–20°C) ✓ Ready to plant

Modelled from Open-Meteo forecast (Sydney), not a live sensor.

How to Grow Rosemary in Warm Temperate Australia

When to Plant

Plant almost year-round. Best in spring or autumn.

Soil
Well-drained, lean, slightly alkaline soil. Sandy or gravelly. Does NOT want rich soil.
pH Range
6.5-7.5
Sunlight
Full sun. Minimum 6 hours. More = better.
Spacing
100cm apart, 120cm between rows
Watering
Minimal once established. Water young plants weekly until rooted. Established plants need almost no supplementary water in temperate zones. OVERWATERING KILLS ROSEMARY.

Companion plants: Sage, Thyme, Lavender, Beans, Cabbage, Carrot

Avoid planting near: Mint, Basil (different water needs)

Warm Temperate Growing Tips for Rosemary

Recommended Varieties

  • Tuscan Blue
  • Common
  • Prostrate
  • Miss Jessops Upright

Key Challenges

  • Humid summers in coastal areas
  • Drainage still critical

Pro Tips

  • Good zone for rosemary
  • Lean soil and minimal water once established
  • Makes excellent hedge plant

Harvesting Rosemary

When ready: Harvest from established plants (6+ months old). Evergreen, available year-round.

How to harvest: Snip 10-15cm stem tips. Never cut into old leafless wood, it won't regrow. Always cut above green growth.

Common Rosemary Pests in Warm Temperate Zones

Scale Insects and Aphids, risk: MODERATE (score: 47/100)

Organic prevention: Good air circulation.

View all pest alerts →

Where to next

What rosemary costs in the shops right now, retailer by retailer, updated daily.

Also worth sowing in the warm temperate zone this September: Ginger, Beetroot, Chilli Peppers and Cucumber.

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Common Questions About Rosemary

When do you plant rosemary in Australia?

It depends on your climate zone, not the calendar month alone. Planting months by zone:

Does rosemary grow all year round in Sydney?

No. In the Warm Temperate zone the planting months are Sep to Nov. Outside that window it either bolts, sulks or gets cut down by the weather.

Which zone am I in?

Type your postcode into the box under the heading and the page tells you, and links this crop in your own zone if it differs. Or look it up on the grow zone map. This page is the Warm Temperate zone, Sydney is its reference city.