When to Plant NZ Spinach in Cairns, Tropical Guide
Soil temperature is modelled from Open-Meteo forecast (Cairns), not a live sensor.
What this month normally looks like 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.
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This NZ Spinach 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.
- Planting window
- Apr to Jul
- Days to harvest
- 55 days
- Sun
- Full sun to part shade
- Water
- Low
- Spacing
- 60 cm apart
- Soil pH
- 6.0–7.5
New Zealand spinach, also known as warrigal greens or Botany Bay greens, is an Australian and New Zealand native plant that produces thick, succulent-like triangular leaves with a spinach-like flavour.
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Planting Calendar for Tropical
- Jan -
- Feb -
- Mar -
- Apr S
- May S/T/D
- Jun S/T/D
- Jul T/D
- Aug -
- Sep -
- Oct -
- Nov -
- Dec -
S = Seed Tray T = Transplant D = Direct Sow
Want a nudge when it is sowing time?
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How to Grow NZ Spinach in Tropical Australia
- Soil
- Tolerates a wide range of soils including poor, sandy, and slightly saline conditions. Performs best in well-drained, moderately fertile soil. Does not need rich soil.
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- pH Range
- 6.0-7.5
- Sunlight
- Full sun in most zones. Part shade in extreme heat (arid, tropical). Tolerates coastal salt spray.
- Spacing
- 60cm apart, 90cm between rows
- Watering
- Very drought tolerant once established. Water weekly in dry weather for best leaf production. Tolerates neglect. Overwatering in heavy soil can cause root rot.
- Good companions
- Pumpkin (as ground cover beneath tall crops), Tomato, Sweet Corn
- Keep away from
- No known antagonists. Very easygoing companion.
- Grow before it
- Legumes (Beans - Dwarf, Peas, Broad Beans)
- Grow after it
- Fruiting crops (Tomato, Capsicum, Zucchini)
Give the bed 3 turns before leafy greens go back in. Leaf crops want the nitrogen the legumes left behind.
Tropical Growing Tips for NZ Spinach
Recommended Varieties
- Standard Tetragonia tetragonioides (no named cultivars widely available)
Key Challenges
- May become leggy in wet season
- Root rot if waterlogged
- Can become invasive
Pro Tips
- The single best spinach substitute for tropical gardens
- Requires almost no maintenance once established
- Use as ground cover under fruit trees for dual purpose
Pests and problems for NZ Spinach in Tropical
Harvesting NZ Spinach
When ready: Growing tips and leaves are plump, fresh, and dark green. Harvest when tips are 8-15cm long. Younger leaves are more tender.
How to harvest: Pinch or cut growing tips (last 5-10cm) including 3-4 leaves. This encourages branching and more production. Never strip all leaves from a stem.
Storing and preserving nz spinach
How to keep it
- Blanching and Freezing. CRITICAL: NZ spinach MUST be blanched before eating or freezing to remove oxalates. Blanch tips in boiling water for 30-60 seconds. Plunge into ice bath. Drain, squeeze, pack into freezer bags. Keeps: 8-12 months.
- Blanch and Use Fresh. Blanch 30-60 seconds in boiling water. Ice bath. Use immediately as cooked green in any recipe calling for spinach. Texture is thicker and more succulent than spinach. Keeps: 3-4 days refrigerated after blanching.
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
Common Questions About NZ Spinach
When do you plant nz spinach in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Apr to Jul
- Subtropical (Brisbane): Aug to Nov
- Warm Temperate (Sydney): Jan to Mar, Sep to Dec
- Cool Temperate (Melbourne): Jan, Sep to Dec
- Cold / Highland (Canberra): Jan, Oct to Dec
- Arid / Semi-Arid (Alice Springs): Jan to Feb, Sep to Nov
- Mediterranean (Perth): Jan to Mar, Sep to Dec
Can you grow nz spinach all year round in Cairns?
No. In the Tropical zone the planting months are Apr to Jul. Outside that window it either bolts, sulks or gets cut down by the weather.
When should I plant NZ Spinach in Cairns?
Sow from May to July in the dry season, or start in trays from April. Once established it keeps producing into the wet and may slow in the wettest months. The ideal leafy green for tropical Australia.
What soil temperature do NZ Spinach need?
NZ Spinach germinate best when soil temperature is between 15°C and 25°C.
How do I know when NZ Spinach are ready to harvest?
Growing tips and leaves are plump, fresh, and dark green. Harvest when tips are 8-15cm long. Younger leaves are more tender.
What are the best NZ Spinach varieties for Cairns?
Recommended varieties for the Tropical zone include: Standard Tetragonia tetragonioides (no named cultivars widely available).
What grows well with NZ Spinach?
Good companion plants for NZ Spinach include: Pumpkin, Tomato, Sweet Corn.
Are nz spinach salt tolerant?
Only a little. Nz spinach 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 Tropical zone, Cairns is its reference city.