When to Plant Coriander in Perth, Mediterranean Guide
Also called cilantro, Chinese parsley.
Soil temperature is modelled from Open-Meteo forecast (Perth), not a live sensor.
What this month normally looks like in Mediterranean
In October the Mediterranean zone normally runs 22°C by day and 10°C overnight, with about 38 mm of rain over 6 or 7 wet days. The coldest October night on record across the zone was -0.2°C, so a late frost is not out of the question. Averages 1991 to 2026, 19 postcodes, SILO.
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This Coriander guide is written for the Mediterranean zone, which takes in Perth, Adelaide and Bunbury. Somewhere else? Your postcode picks the right one.
Not your zone? Cairns Brisbane Sydney Melbourne Canberra Alice Springs
Also handy: will it frost this week? and what grows in shade.
- Planting window
- Mar to Sep
- Days to harvest
- 35 days
- Sun
- Full sun to part shade
- Water
- Regular
- Spacing
- 5 cm apart
- Soil pH
- 6.0–7.0
The most frustrating herb in Australia. Coriander bolts to seed at the first hint of warmth, making it a cool-season-only crop in most zones. Both the leaves (cilantro) and seeds (coriander spice) are useful.
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Planting Calendar for Mediterranean
- Jan -
- Feb -
- Mar D
- Apr D
- May D
- Jun D
- Jul D
- Aug D
- Sep D
- Oct -
- Nov -
- Dec -
S = Seed Tray T = Transplant D = Direct Sow
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How to Grow Coriander in Mediterranean Australia
- Soil
- Rich, well-drained soil with compost. Consistent moisture critical.
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- pH Range
- 6.0-7.0
- Sunlight
- Full sun in cool weather. Part shade essential in warm zones to delay bolting.
- Spacing
- 5cm apart, 20cm between rows
- Watering
- Keep consistently moist at all times. Any drought stress triggers bolting. Mulch to retain moisture and keep roots cool.
- Good companions
- Lettuce, Cucumber, Carrot, Dill, Cabbage
- Keep away from
- Fennel
Mediterranean Growing Tips for Coriander
Recommended Varieties
- Slow Bolt
- Leisure
- Common coriander
Key Challenges
- Dry summers trigger bolting even if temperatures are moderate
- Water stress = instant bolt
Pro Tips
- Cool, wet winters are perfect for coriander
- Sow in autumn and harvest through winter
- Spring sowing marginal. Hot northerlies trigger bolting
Pests and problems for Coriander in Mediterranean
Harvesting Coriander
When ready: Harvest leaves once plants are 10-15cm tall. Harvest before any sign of central flower stem elongation.
How to harvest: Cut outer leaves at base, leaving central growing point. Or cut entire plant 3cm above soil for regrowth (one regrowth only). For seed: let plants bolt, flower, and set seed until brown.
Storing and preserving coriander
How to keep it
- Freezing in oil cubes. Chop leaves finely, pack into ice cube trays, cover with olive oil. Freeze. Best preservation method for coriander. Retains more flavour than drying. Keeps: 6 months frozen.
- Drying (seeds/spice). Dry mature seeds thoroughly in paper bags for 2 weeks. Store whole seeds and grind as needed. Toast lightly before grinding for best flavour. Keeps: 2-3 years for whole seeds.
- Coriander paste. Blend leaves, stems, garlic, green chilli, salt, and oil into paste. Freeze in ice cube trays or small jars with oil layer on top. Keeps: 6 months frozen, 2 weeks refrigerated.
What coriander costs in the shops right now, retailer by retailer, updated daily.
What members get
- Soil and weather from your nearest station
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Common Questions About Coriander
When do you plant coriander in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Apr to Jul Likely to bolt if sown in July.
- Subtropical (Brisbane): Mar to Aug Likely to bolt if sown in August.
- Warm Temperate (Sydney): Mar to Sep
- Cool Temperate (Melbourne): Feb to Jun, Aug to Nov Likely to bolt if sown in September, October and November.
- Cold / Highland (Canberra): Feb to Mar, Aug to Nov Likely to bolt if sown in October and November.
- Arid / Semi-Arid (Alice Springs): Mar to Aug Likely to bolt if sown in July and August.
- Mediterranean (Perth): Mar to Sep
Can you grow coriander all year round in Perth?
No. In the Mediterranean zone the planting months are Mar to Sep. Outside that window it either bolts, sulks or gets cut down by the weather.
What else is coriander called?
Coriander is the usual Australian name. Overseas seed packets and recipes call it cilantro, Chinese parsley. Same plant, same growing advice.
When should I plant Coriander in Perth?
Sow direct every three to four weeks through the cool months. It bolts quickly in spring and summer heat; slow-bolt varieties help.
What soil temperature do Coriander need?
Coriander germinate best when soil temperature is between 10°C and 25°C.
How do I know when Coriander are ready to harvest?
Harvest leaves once plants are 10-15cm tall. Harvest before any sign of central flower stem elongation.
What are the best Coriander varieties for Perth?
Recommended varieties for the Mediterranean zone include: Slow Bolt, Leisure, Common coriander.
What grows well with Coriander?
Good companion plants for Coriander include: Lettuce, Cucumber, Carrot, Dill, Cabbage.
Are coriander salt tolerant?
Only a little. Coriander are moderately sensitive to salt, so the harvest drops on salty bore water. Mix salty water with rainwater, and mulch the bed.
Which zone am I in?
Type your postcode into the box near the top of the page and it 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 Mediterranean zone, Perth is its reference city.