When to Plant Carambola in Brisbane, Subtropical Guide
What this month normally looks like in Subtropical
In October the Subtropical zone normally runs 27°C by day and 15°C overnight, with about 77 mm of rain over 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, 33 postcodes, SILO.
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This Carambola guide is written for the Subtropical zone, which takes in Brisbane, the Gold Coast and the Sunshine Coast. Somewhere else? Your postcode picks the right one.
Not your zone? Cairns Sydney Melbourne Canberra Alice Springs Perth
Also handy: will it frost this week? and what grows in shade.
- Planting window
- Sep to Feb
- Sun
- Full sun
- Soil pH
- 6.6–7.3
Carambola, or star fruit, is a small evergreen tree of 3 to 5 m, or 2 to 3 m pruned, for warm humid tropical and subtropical gardens, with waxy yellow ribbed fruit that cuts into stars (Daleys).
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Best Planting Window for Subtropical
- Jan P
- Feb P
- Mar -
- Apr -
- May -
- Jun -
- Jul -
- Aug -
- Sep P
- Oct P
- Nov P
- Dec P
P = Planting window
Daleys lists it for the subtropics, likes temperatures above 5 degrees and tolerates mild frost once established; a Bundaberg QLD review grows it in deep soil. Harvest March to September. Growth stops below 18 degrees (IFAS). Planting months are our estimate: spring to summer.
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How to Grow Carambola in Subtropical Australia
- Soil
- Rich moist soil with compost and manure, mulched (Daleys); pH 4.5 to 7 (IFAS); no flooding (Morton).
- 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, sheltered from constant wind (IFAS).
- Keep away from
- Windy sites (IFAS), Wet ground (Morton), Limestone soil (Morton)
Subtropical Growing Tips for Carambola
Recommended Varieties
- Maher, grafted (Daleys)
Key Challenges
- Fruit fly
- Cold snaps stop growth
Pro Tips
- Deep rich soil with compost, manure and mulch (Daleys)
- Plant two trees for a heavier set (Daleys)
Pests and problems for Carambola in Subtropical
Harvesting Carambola
When ready: Pick when the furrows turn yellow and only the rib tips are still green; fruit gains no sugar after picking (IFAS).
How to harvest: Clip the fruit with a short stem and handle gently; the ribs bruise.
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 Carambola
When do you plant carambola in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Jan to Mar, Nov to Dec
- Subtropical (Brisbane): Jan to Feb, Sep to Dec
- Warm Temperate (Sydney): Oct to Nov
- Cool Temperate (Melbourne): not recommended
- Cold / Highland (Canberra): not recommended
- Arid / Semi-Arid (Alice Springs): not recommended
- Mediterranean (Perth): not recommended
When should I plant Carambola in Brisbane?
Daleys lists it for the subtropics, likes temperatures above 5 degrees and tolerates mild frost once established; a Bundaberg QLD review grows it in deep soil. Harvest March to September. Growth stops below 18 degrees (IFAS). Planting months are our estimate: spring to summer.
How do I know when Carambola are ready to harvest?
Pick when the furrows turn yellow and only the rib tips are still green; fruit gains no sugar after picking (IFAS).
What are the best Carambola varieties for Brisbane?
Recommended varieties for the Subtropical zone include: Maher, grafted (Daleys).
Are carambola salt tolerant?
No. Carambola 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 Subtropical zone, Brisbane is its reference city.