When to Plant Rockmelon in Sydney, Warm Temperate Guide

Also called cantaloupe.

Sow now in Warm Temperate Soil 18.3°C, best 20–35°C. Still too cold.

Soil temperature is modelled from Open-Meteo forecast (Sydney), not a live sensor.

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.

Jump to section
  1. Planting calendar
  2. How to grow
  3. Local tips and varieties
  4. Pests and problems
  5. Harvesting
  6. Storing and preserving
  7. Other zones and related crops
  8. Common questions

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This Rockmelon 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
Sep to Dec
Days to harvest
about 12 weeks
Sun
Full sun
Water
Regular
Spacing
100 cm apart
Soil pH
6.0–7.0

Rockmelon (called cantaloupe outside Australia/NZ) is a warm-season melon requiring long hot summers for sweet fruit. Australia is a major commercial rockmelon producer.

Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.

Rockmelon

Photo: Wikimedia Commons

Planting Calendar for Warm Temperate

  • Jan -
  • Feb -
  • Mar -
  • Apr -
  • May -
  • Jun -
  • Jul -
  • Aug -
  • Sep S
  • Oct S/T/D
  • Nov T/D
  • Dec T

S = Seed Tray   T = Transplant   D = Direct Sow

Want a nudge when it is sowing time?

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

How to Grow Rockmelon in Warm Temperate Australia

Soil
Sandy loam or well-drained fertile soil. Excellent drainage essential.
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 (minimum 8 hours for sweet fruit)
Spacing
100cm apart, 180cm between rows
Watering
Regular deep watering during vine growth and fruit set. CRITICAL: reduce watering significantly as fruit approaches maturity for sweetness.
Good companions
Nasturtium, Sweet Corn, Radish, Sunflower
Keep away from
Cucumber (same family rotation issues), Potato
Grow before it
Leafy greens and brassicas (Lettuce, Silverbeet, Broccoli)
Grow after it
Roots and alliums (Carrot, Beetroot, Onion)

Give the bed 3 turns before cucurbits go back in. Pumpkin, cucumber and zucchini want a bed with fresh compost dug through.

Members see the exact salt threshold, how much harvest it loses as salt rises, and what to grow instead. See what members get

Warm Temperate Growing Tips for Rockmelon

Recommended Varieties

  • Hales Best Jumbo
  • Sweet Granite
  • Minnesota Midget (early)

Key Challenges

  • Cool springs delay planting
  • Shorter season
  • Poor sweetness in cool summers

Pro Tips

  • Black plastic mulch
  • Start indoors September
  • Early varieties for reliability

Pests and problems for Rockmelon in Warm Temperate

Members see each pest score and pest risk alerts for your area. See what members get

Organic prevention (Queensland Fruit Fly): Net before fruit matures. Hygiene. Pick slightly early and ripen indoors.

Browse the full pest library →

Harvesting Rockmelon

When ready: Skin changes from green to golden beneath netting. Strong sweet aroma at stem end. Fruit 'slips' from vine easily (full slip). Stem end cracks slightly.

How to harvest: Gently push fruit from vine or cut with knife. Handle carefully. Harvest in morning.

Storing and preserving rockmelon

How to keep it
  • Freezing. Deseed, peel, cube. Freeze on tray, bag. Best for smoothies. Texture changes on thawing. Keeps: 12 months.
  • Dehydrating. Peel, deseed, slice thin (5mm). Dehydrate 55C for 10-14 hours. Sweet chewy snack. Keeps: 6-12 months.
  • Fresh eating (best option). Best fresh. Refrigerate whole ripe 5 days. Cut lasts 2-3 days refrigerated. Keeps: 5 days whole, 2-3 days cut.

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

Members see the price history and price alerts for rockmelon. See what members get

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

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Common Questions About Rockmelon

When do you plant rockmelon in Australia?

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

Can you grow rockmelon all year round in Sydney?

No. In the Warm Temperate zone the planting months are Sep to Dec. Outside that window it either bolts, sulks or gets cut down by the weather.

What else is rockmelon called?

Rockmelon is the usual Australian name. Overseas seed packets and recipes call it cantaloupe. Same plant, same growing advice.

When should I plant Rockmelon in Sydney?

October to December. Start indoors.

What soil temperature do Rockmelon need?

Rockmelon germinate best when soil temperature is between 20°C and 35°C.

How do I know when Rockmelon are ready to harvest?

Skin changes from green to golden beneath netting. Strong sweet aroma at stem end. Fruit 'slips' from vine easily (full slip). Stem end cracks slightly.

What are the best Rockmelon varieties for Sydney?

Recommended varieties for the Warm Temperate zone include: Hales Best Jumbo, Sweet Granite, Minnesota Midget (early).

What grows well with Rockmelon?

Good companion plants for Rockmelon include: Nasturtium, Sweet Corn, Radish, Sunflower.

Are rockmelon salt tolerant?

Only a little. Rockmelon 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 Warm Temperate zone, Sydney is its reference city.