When to plant Oregano in Temperate Australia

Temperate zone — applies to Sydney, Melbourne, Adelaide, Perth, Newcastle and similar areas. Growing elsewhere? Cool · Subtropical · Tropical · Arid.

Oregano can be sown direct in temperate Australia across a long spring window from August to December, with a second opportunity in autumn during March and April. Sow 5 mm deep and be prepared for a patchy, unhurried emergence — germination runs anywhere from 10 to 28 days — before plants build to harvest size over 80–90 days. As a hardy perennial it is untroubled by frost, and a single well-sited plant will spread into a generous clump, so leave a full 50 cm between plants. Sun, lean soil and neglect suit it better than fuss; the flavour is strongest in plants grown a little hard.

Sowing calendar — temperate zone

Green months are your sowing window: March to April and August to December.

Growing notes

Hardy to its roots, oregano treats temperate frosts — running roughly May to mid-October — as background noise, which is why the sowing calendar can open as early as August. Early spring sowings germinate slowly in cool soil but establish well; sowings from October to December come up faster and still have time to settle before winter. The March and April window suits gardeners who want plants established through the cool months and ready to romp away the following spring.

Sow 5 mm deep into a weed-free bed, because the drawn-out 10–28 day germination is the crop's most dangerous period: slow, sparse seedlings are easily swallowed by weeds or lost to a crusted, dried-out surface. Mark the row, keep the surface lightly moist, and weed by hand until the seedlings are unmistakable. Thin to 50 cm — it looks absurdly generous for tiny plants, but oregano spreads into a broad mat within a season or two.

Full sun and poor-to-average, free-draining soil produce the pungent, peppery leaf that makes oregano worth growing; rich soil and constant irrigation give bulk with washed-out flavour. Once established, water only in extended dry spells. Cut plants back hard after flowering each summer to renew the foliage, and lift and divide clumps every few years when the centre grows thin.

Oregano at a glance

Common questions

When should I sow oregano in temperate Australia?

Sow direct from August to December, or in autumn during March and April. Oregano is hardy, so seedlings and established plants both cope with temperate frosts.

How long does oregano take to germinate and grow?

Germination is slow and uneven at 10–28 days, and plants take 80–90 days to reach harvest size. Keep the seedbed moist and weed-free for the whole germination period.

Why does my oregano have hardly any flavour?

Rich soil and heavy watering produce lush but bland leaves. Grow oregano in full sun in lean, free-draining soil and water sparingly — plants grown a little hard taste far stronger.

Does oregano come back every year?

Yes, oregano is a hardy perennial. It persists through temperate winters and spreads into a clump over time; cutting it back after flowering keeps the growth fresh.

Keep exploring