Watermelon
Citrullus lanatus
When to plant watermelon in Australia
Plant watermelon October to December in temperate climates (Melbourne, Adelaide, Sydney); December to January in cool climates (Canberra, Hobart, Ballarat); October to December in subtropical climates (Brisbane, Gold Coast); September to November in tropical climates (Darwin, Cairns); October to December in arid climates (Alice Springs, Mildura).
Needs a long hot summer. In cooler climates, grow under plastic tunnels. Ripeness test: thump the fruit — hollow sound means ripe. Requires 3–4 months warm weather.
Growing guide
Sunlight
8–10 hours direct sun per day
Watering
High — keep soil consistently moist
Spacing
90cm between plants, 180cm between rows
Frost tolerance
Tender — frost will damage or kill
Frequently asked
- How long does watermelon take to grow in Australia?
- Watermelon takes 80–100 days from sowing to harvest, depending on variety and climate.
- How much space does watermelon need?
- Space watermelon 90cm apart in rows 180cm apart. Each plant needs 8–10 hours of sun per day.
- Can I grow watermelon in Melbourne in winter?
- Watermelon is generally not planted in Melbourne over winter. The temperate planting window is October to December.
- What should I plant next to watermelon?
- Companion plants for watermelon vary by garden conditions. Add watermelon to your patch in My Veggie Patch to see personalised companion recommendations.
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