When to Plant Grapefruit in Melbourne, Cool Temperate Guide

Plant October to November. Right now in October you can plant.

Planting window
Needs the warmest, most sheltered spot, such as against a north-facing wall. Fruit takes over a year to ripen and stays sharper than in...
Sunlight
Full sun, minimum 8 hours. More sun = sweeter fruit. North-facing position ideal.
Soil pH
6.0-7.0
Shop price
$5.50/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 Grapefruit guide is written for the Cool Temperate zone, which takes in Melbourne, Hobart and Geelong. Somewhere else? Your postcode picks the right one.

Not your zone? Cairns Brisbane Sydney Canberra Alice Springs Perth

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

Grapefruit

Photo: Wikimedia Commons

Large citrus tree that needs warm conditions and ample space. Produces heavy crops of tart-sweet fruit that hang on the tree for months (natural storage). Needs more heat than most citrus to develop sweetness. Fruit from cool climates is excessively sour. One of the larger citrus species; a mature tree reaches 6-8m. Grafted trees on trifoliata or Swingle citrumelo rootstock. Self-fertile but benefits from warm conditions during flowering for good fruit set.

See what grows now in your own postcode

Best Planting Window for Cool Temperate

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

P = Planting window

Needs the warmest, most sheltered spot, such as against a north-facing wall. Fruit takes over a year to ripen and stays sharper than in warmer districts.

Want a nudge when it is Grapefruit sowing time in Melbourne?

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

This month in Cool Temperate

In October the Cool Temperate zone normally runs 19°C by day and 8°C overnight, with about 67 mm of rain over 9 or 10 wet days. The coldest October night on record across the zone was -3.0°C, so a late frost is not out of the question. Averages 1991 to 2026, 28 postcodes, SILO.

The full twelve months are on the Cool Temperate zone page.

How to Grow Grapefruit in Cool Temperate Australia

When to Plant

Needs the warmest, most sheltered spot, such as against a north-facing wall. Fruit takes over a year to ripen and stays sharper than in warmer districts.

Soil
Well-drained, slightly acidic to neutral. Avoid heavy waterlogged clay. Sandy loam ideal. All citrus hate wet feet.
pH Range
6.0-7.0
Sunlight
Full sun, minimum 8 hours. More sun = sweeter fruit. North-facing position ideal.

Companion plants: Comfrey, Nasturtium, Marigold

Avoid planting near: Grass to trunk (competition)

Cool Temperate Growing Tips for Grapefruit

Recommended Varieties

  • Wheeny (most cold-tolerant)
  • Marsh

Key Challenges

  • Insufficient heat for sweetness
  • Fruit very tart
  • Frost risk
  • Citrus gall wasp

Pro Tips

  • Grapefruit is marginal in Melbourne. Fruit will be extremely sour most years.
  • If you want sour grapefruit for marmalade, it works. For eating, it's disappointing.
  • Consider a lemon or mandarin instead.

Harvesting Grapefruit

When ready: Skin turns yellow (white varieties) or develops pink blush (red varieties). Fruit feels heavy for size. Taste test is the best indicator. Grapefruit sweetens the longer it stays on tree (can hang 6+ months).

How to harvest: Cut with secateurs or twist-pull. Don't tear bark. Harvest in dry weather.

Preserving: pressure canning

1 tested pressure-canning recipe for Grapefruit: 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

  • Grapefruit and Orange Sections

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

Also worth sowing in the cool temperate zone this October: Radish, Sweet Corn, Beetroot and Chilli Peppers.

The pest most likely to find your grapefruit: Queensland Fruit Fly.

Supermarket Price

Current average retail: $5.50/kg (12-month range: $3.90–$7.33)

Grow your own and save on grocery bills.

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Common Questions About Grapefruit

When do you plant grapefruit 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 Cool Temperate zone, Melbourne is its reference city.