When to plant Warrigal Greens in Tropical Australia
Tropical zone — applies to Darwin, Cairns, Townsville, Broome, Mackay and similar areas. Growing elsewhere? Temperate · Cool · Subtropical · Arid.
Sow warrigal greens direct from April to November, dropping seed 5 mm deep once the wet season eases and the soil is workable. This native spinach substitute germinates slowly over 14–21 days, so soak the hard seed overnight to speed things along. Space plants 30–50 cm apart with about 60 cm between rows, because a single sprawling plant will happily cover a square metre. You will be picking tender tips within 60–90 days, and regular harvesting keeps the growth soft. Across Darwin and Cairns it thrives in the cooler dry-season months when leaf crops usually struggle.
Sowing calendar — tropical zone
Green months are your sowing window: April to November.
Growing notes
Warrigal greens are one of the few leafy crops that shrug off tropical conditions, but they are best treated as a dry-season plant here. Sown from April onward, they establish as humidity drops and reward you with months of picking through Townsville's mild winter.
The most common failure is bitterness and toughness in the wet. Plants pushed through the humid November-to-April window bolt, turn coarse, and pick up leaf-spot fungi fast. The fix is timing: get seed in during the dry season and harvest tips constantly to force soft new growth.
A second issue is oxalates. Like all warrigal greens, the leaves carry oxalic acid, so blanch them for a minute and tip the water before eating. This is a cooked green, not a salad leaf.
Give them full sun to part shade, steady moisture, and free-draining soil. In Broome's heat a light afternoon shade keeps leaves plumper. They self-seed readily, so once you have a patch you rarely need to sow again. Pinch flower spikes if you want to keep the plant productive rather than letting it run to seed.
Warrigal Greens at a glance
| Sowing depth | 5 mm |
|---|---|
| Plant spacing | 30-50 cm |
| Row spacing | 60 cm |
| Germination | 14-21 days |
| Days to maturity | 60-90 days |
| Frost tolerance | Half Hardy |
| Method | Sow Direct |
Common questions
- When should I plant warrigal greens in Darwin?
- Sow from April through to November, targeting the dry season. This native spinach turns bitter and disease-prone in the humid wet, so the cooler, drier months give you the tender, sustained harvest you want.
- Do warrigal greens need to be cooked?
- Yes. The leaves contain oxalic acid, so blanch them in boiling water for around a minute and discard that water before eating. They work well anywhere you would use cooked spinach, but are not suited to raw salads.
- How far apart do you space warrigal greens?
- Allow 30–50 cm between plants and about 60 cm between rows. Each plant sprawls widely across the ground, so give it room rather than crowding, which raises humidity and fungal risk in the tropics.
- Why is my warrigal greens plant tough and bitter?
- This usually means it grew through hot, humid weather or was left unpicked too long. Harvest the soft tips often to force fresh growth, and sow in the dry season rather than the wet for the best texture.
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