When to Plant Cumquat in Sydney, Warm Temperate Guide
What this month normally looks like in Warm Temperate
In October the Warm Temperate zone normally runs 24°C by day and 13°C overnight, with about 66 mm of rain over 7 or 8 wet days. The coldest October night on record across the zone was -1.5°C, so a late frost is not out of the question. Averages 1991 to 2026, 153 postcodes, SILO.
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This Cumquat 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.
- Planting window
- Mar to Apr, Sep to Nov
- Sun
- Full sun
- Soil pH
- 6.6–7.3
The cumquat is the smallest and most cold hardy of the edible citrus. You eat the sweet skin and the sour flesh together. It grows well in a big pot, takes light frost once established, and fruits in winter.
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Best Planting Window for Warm Temperate
- Jan -
- Feb -
- Mar P
- Apr P
- May -
- Jun -
- Jul -
- Aug -
- Sep P
- Oct P
- Nov P
- Dec -
P = Planting window
Daleys lists warm temperate as suited, and the tree handles frosts. Ripe fruit can stay on the tree for a few months without losing flavour (Bunnings NZ). Plant in autumn or spring.
Want a nudge when it is sowing time?
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How to Grow Cumquat in Warm Temperate Australia
- Soil
- Fertile, free draining, slightly acidic soil (GrowVeg). Moist but well drained, enriched with organic matter (Bunnings NZ).
- Salt
- Sensitive. Struggles with salty bore water or salty soil. Give it rainwater if you can.
- pH Range
- 6.6-7.3
- Sunlight
- Full sun (GrowVeg, Bunnings NZ).
- Good companions
- Nasturtium, Basil, Peas, Borage, Lavender
- Keep away from
- Waterlogged ground, Frost pockets
Warm Temperate Growing Tips for Cumquat
Recommended Varieties
- Nagami (oval, cold hardy)
- Meiwa (round, sweeter)
Key Challenges
- Leaf miner
- Fruit fly
Pro Tips
- Plant in spring or autumn
- Mulch off the trunk
Pests and problems for Cumquat in Warm Temperate
Harvesting Cumquat
When ready: Pick fruit that is uniformly orange with firm skin (Bunnings NZ). Ripe fruit can stay on the tree for a few months without losing flavour.
How to harvest: Pick by hand. Fruit sets over several weeks, so harvest is staggered (GrowVeg).
What members get
- Soil and weather from your nearest station
- An email when it's time to sow
- Your own garden plan, including planning from a photo
- Price history and price alerts
- Pest risk alerts for your area
- Full salt and canning detail
Common Questions About Cumquat
When do you plant cumquat in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Mar to May
- Subtropical (Brisbane): Mar to May, Sep to Nov
- Warm Temperate (Sydney): Mar to Apr, Sep to Nov
- Cool Temperate (Melbourne): Mar to Apr, Sep to Oct
- Cold / Highland (Canberra): Oct to Nov
- Arid / Semi-Arid (Alice Springs): Mar to Apr, Sep to Oct
- Mediterranean (Perth): Mar to Apr, Sep to Oct
When should I plant Cumquat in Sydney?
Daleys lists warm temperate as suited, and the tree handles frosts. Ripe fruit can stay on the tree for a few months without losing flavour (Bunnings NZ). Plant in autumn or spring.
How do I know when Cumquat are ready to harvest?
Pick fruit that is uniformly orange with firm skin (Bunnings NZ). Ripe fruit can stay on the tree for a few months without losing flavour.
What are the best Cumquat varieties for Sydney?
Recommended varieties for the Warm Temperate zone include: Nagami (oval, cold hardy), Meiwa (round, sweeter).
What grows well with Cumquat?
Good companion plants for Cumquat include: Nasturtium, Basil, Peas, Borage, Lavender.
Are cumquat salt tolerant?
No. Cumquat are salt-sensitive, one of the more sensitive veggies. Use rainwater if your bore water is salty, or grow them in a raised bed of fresh mix if your soil is.
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 Warm Temperate zone, Sydney is its reference city.