When to Plant Blueberry in Cairns, Tropical Guide

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

Planting window
Only low-chill types, grown in pots of acid mix, have a realistic chance, and the elevated Tablelands suit them far better than the humid...
Sunlight
Full sun to part shade. Morning sun with afternoon shade ideal in hot zones. At least 6 hours direct sun for best fruiting.
Soil pH
4.5-5.5 (CRITICAL - will not thrive outside this range)
Shop price
$24.38/kg average

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

This Blueberry 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.

Blueberry

Photo: Wikimedia Commons

Acid-loving shrub that MUST have acidic soil (pH 4.5-5.5). Most Australian soils are too alkaline. Growing in pots with specialist acidic potting mix is the most reliable approach for most home gardeners. Three main types: northern highbush (high chill, cool climates), southern highbush (low chill, warm climates), and rabbiteye (tough, heat-tolerant, moderate chill). Grafted plants on rabbiteye rootstock now available for improved performance.

See what grows now in your own postcode

Best Planting Window for Tropical

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
- - - P P P - - - - - -

P = Planting window

Only low-chill types, grown in pots of acid mix, have a realistic chance, and the elevated Tablelands suit them far better than the humid coast. Humidity brings fruit-spotting bug and grey mould.

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

One email a week with what is worth planting in the Tropical zone right now, Blueberry included, plus which veg has jumped in price at the supermarket. Free, and you can stop it in one click.

This month in Tropical

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.

The full twelve months are on the Tropical zone page.

How to Grow Blueberry in Tropical Australia

When to Plant

Only low-chill types, grown in pots of acid mix, have a realistic chance, and the elevated Tablelands suit them far better than the humid coast. Humidity brings fruit-spotting bug and grey mould.

Soil
ACIDIC soil, pH 4.5-5.5. This is non-negotiable. Use 50:50 peat moss and pine bark for pots. In-ground only in naturally acidic soils (rare in Australia). Add sulphur to lower pH - takes 3-6 months to work.
pH Range
4.5-5.5 (CRITICAL - will not thrive outside this range)
Sunlight
Full sun to part shade. Morning sun with afternoon shade ideal in hot zones. At least 6 hours direct sun for best fruiting.

Companion plants: Azalea, Rhododendron, Strawberry (woodland types)

Avoid planting near: Lime-loving plants, Concrete paths (leach alkalinity into soil)

Tropical Growing Tips for Blueberry

Recommended Varieties

  • Southern highbush: Sunshine Blue, Misty, O'Neal
  • Rabbiteye types need more chill than the tropics give

Key Challenges

  • Excessive heat
  • No chill hours
  • Difficult to maintain acidic soil
  • High disease pressure

Pro Tips

  • Honestly, blueberries are a poor choice for tropical zones. If you must try, use pots with acidic mix in a position with morning sun and afternoon shade. Expect poor yields.

Harvesting Blueberry

When ready: Berries turn fully blue/purple, then wait 3-5 more days. Ripe berries detach with a gentle roll of the thumb, no tugging needed. Taste test: sweet with slight tartness.

How to harvest: Pick by hand, rolling berries gently off cluster. Harvest every 2-3 days as berries ripen unevenly. Early morning harvest for best quality.

Preserving: pressure canning

1 tested pressure-canning recipe for Blueberry: 1 where it is the crop being canned. Each one comes from published home canning guidelines. The conversion to Australian units is ours, with psi beside every kPa. Always follow your pressure canner's manual.

Recipes in this set

  • Berries-Whole

The full recipe details are for members on a paid plan: jar sizes, headspace, process time, the pressure for a weighted or dial gauge at your altitude, the ingredients, the preparation steps and the safety notes.

See the plans

Where to next

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

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

Supermarket Price

Current average retail: $24.38/kg (12-month range: $20.00–$36.00)

Grow your own and save on grocery bills.

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Common Questions About Blueberry

When do you plant blueberry in Australia?

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

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.