When to Plant Thyme in Cairns, Tropical Guide

Sow April to June. Right now in October it is out of season. The next sowing month is April.

Planting window
Start early in the dry, or buy a potted plant, and grow in a pot with sharp drainage. Plants often fade in wet-season humidity.
Days to harvest
about 13 weeks
Sunlight
Full sun. Maximum sun = maximum essential oil = maximum flavour.
Water needs
Minimal once established. Water young plants until rooted. Overwatering is the primary...
Spacing
25cm apart, 30cm between rows
Soil pH
6.0-8.0

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

This Thyme guide is written for the Tropical zone, which takes in Cairns, Townsville and Darwin. Somewhere else? Your postcode picks the right one.

Not your zone? Brisbane Sydney Melbourne Canberra Alice Springs Perth

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

Thyme

Photo: Wikimedia Commons

Low-growing Mediterranean perennial subshrub with tiny aromatic leaves. Common/garden thyme (T. vulgaris) is the culinary standard; lemon thyme (T. x citriodorus) adds citrus notes. Extremely drought-tolerant, hates wet feet, and needs excellent drainage. Identical requirements to rosemary. Forms a low mat 15-30cm tall. Long-lived if drainage is right.

See what grows now in your own postcode

Planting Calendar for Tropical

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- - - S S/T T - - - - - -

S = Seed Tray   T = Transplant   D = Direct Sow

Want a nudge when it is Thyme sowing time in Cairns?

One email a week with what is worth planting in the Tropical zone right now, Thyme 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: 23.3°C (optimal range: 15–25°C) ✓ Ready to plant

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

What this month normally looks like

In October the Tropical zone normally runs 34°C by day and 23°C overnight, with about 53 mm of rain over 5 or 6 wet days. Averages 1991 to 2026, 37 postcodes, SILO.

How to Grow Thyme in Tropical Australia

When to Plant

Start early in the dry, or buy a potted plant, and grow in a pot with sharp drainage. Plants often fade in wet-season humidity.

Soil
Well-drained, lean, sandy or gravelly soil. Does NOT want rich soil.
pH Range
6.0-8.0
Sunlight
Full sun. Maximum sun = maximum essential oil = maximum flavour.
Spacing
25cm apart, 30cm between rows
Watering
Minimal once established. Water young plants until rooted. Overwatering is the primary killer.

Companion plants: Rosemary, Sage, Lavender, Cabbage, Strawberry, Tomato

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

Tropical Growing Tips for Thyme

Recommended Varieties

  • Common thyme (marginal zone)

Key Challenges

  • Humidity kills thyme
  • Root rot
  • Poor drainage

Pro Tips

  • Terracotta pot with very gritty mix
  • Under cover during wet season
  • Not well-suited, manage expectations

Harvesting Thyme

When ready: Harvest from established plants (3+ months). Evergreen. Best flavour just before flowering.

How to harvest: Snip stem tips. Never cut into old woody growth, it won't regenerate. Always cut above green leafy growth.

Where to next

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

Also worth sowing in the tropical zone this October: Lemongrass, Ginger, Zucchini and Basil.

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Common Questions About Thyme

When do you plant thyme in Australia?

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

Does thyme grow all year round in Cairns?

No. In the Tropical zone the planting months are Apr to Jun. 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 Tropical zone, Cairns is its reference city.