How to grow new zealand spinach
Family Aizoaceae. Hardy to USDA hardiness zone 4a+ (U.S. Department of Agriculture). Full sun. Ready in 55-70 days.
Sun
Full sun
Spacing
18-24 in
Days to harvest
55-70 days
Hardiness
Zone 4a+
What growers actually recorded
Loading zone 7b results…
When to plant new zealand spinach
- Start indoors: ~4 weeks before last frost.
- Transplant out: ~2 weeks after last frost.
- Direct sow: ~2 weeks after last frost.
Companion plants for new zealand spinach
Plant with: Tomato, Bean.
Common pests & problems
Rarely bothered.
Grower's tip
Soak seed 24 hours before sowing to soften the hard seed coat; it thrives in summer heat that bolts true spinach.
When to plant new zealand spinach in your zone
Free month-by-month sowing and transplanting lists, built from frost dates for your USDA (United States Department of Agriculture) hardiness zone.
Soil & water for new zealand spinach
Soil & pH
6.0-7.0: near neutral
Loose, well-drained loam with 3-5% organic matter.
Compost 2 in worked into the top 6 in of soil each spring.
Watering
1 in / week
Deep drip at the base twice a week beats a daily shallow sprinkle.
Consistent moisture prevents most crop problems.
Knowing when to harvest
- Pinch tender shoot tips and young leaves regularly, 2-3 in from the growing point.
- Frequent harvesting keeps the sprawling plant bushy and productive through summer heat.
- This is a true heat-season crop, not a spinach relative: it thrives when actual spinach has long since bolted.
Storing & keeping
Refrigerate unwashed in a perforated bag at 32-40°F for 3-5 days. Best cooked, since leaves contain oxalic acid that reduces with a brief blanch. Blanch and freeze for longer storage.
What to expect
Per plant: 1-2 lb across a full summer of repeated picking
Troubleshooting new zealand spinach
Sprawling growth taking over nearby beds
Likely cause: Its naturally trailing, ground-covering habit
What to do: Give it 2-3 ft of space to spread, or grow in a large container to contain the trailing stems.
Slow, spotty germination
Likely cause: Hard seed coat
What to do: Soak seed in water for 24 hours before sowing to improve germination rates.
Varieties worth growing
Common New Zealand Spinach (Tetragonia tetragonioides)
The only widely available type, typically sold unnamed and grown specifically as a heat-tolerant spinach substitute.
Growing new zealand spinach in containers
12+ in wide, shallow container; its trailing habit works well in a large pot or hanging planter positioned in full sun.
Nutrition
A meaningful source of vitamins, minerals, and fiber when eaten fresh.
Common questions
Is New Zealand spinach actually spinach?
No, it is unrelated botanically (Tetragoniaceae, not Amaranthaceae), but it is used as a cooked spinach substitute in hot weather when true spinach has bolted.
Should I cook it instead of eating it raw?
Cooking is recommended; like true spinach it contains oxalic acid, and a quick blanch reduces this while also softening its slightly succulent texture.
Where these numbers come from
- USDA Plant Hardiness Zone Map (2023 revision). Zone assignment and the 30-year normals behind every cold-hardiness figure.
- NOAA NCEI 1991-2020 Climate Normals. Frost dates, growing-season length, and the probability bands on both.
- Cornell, UMN, and UC Davis Cooperative Extension crop guides. Spacing, days to maturity, soil pH targets, and per-plant yield ranges.
- USDA FSIS / FDA Produce Safety guidance. Wash, cure, and cold-storage handling numbers.
Ranges are regional guidance, not a promise for your yard. Your own logged results always override the published range.