New Zealand Spinach

Variants (2)

Nutrition · per ~85 g serving · ≈ ¾ cup chopped

Score · 93/100

Overview

New Zealand spinach (Tetragonia tetragonioides), also called summer spinach or warrigal greens, is a heat-tolerant leafy vegetable native to New Zealand and Australia. Unlike common spinach, it thrives in warm conditions and offers a mild, slightly succulent flavor. Per 100g, it provides only 14 calories while delivering an impressive 337 mcg of vitamin K—essential for bone mineralization and vascular health—along with 30 mg of vitamin C for collagen synthesis and immune function. The vegetable contains meaningful amounts of magnesium (39 mg) and potassium (130 mg), which support cardiovascular regulation and metabolic function. Unlike true spinach, New Zealand spinach contains lower oxalate levels, making its minerals more bioavailable and suitable for those concerned with kidney stone risk. Its low glycemic impact and high fiber-to-calorie ratio make it ideal for sustained energy and metabolic health. The presence of vitamin E (1.42 mg) adds antioxidant protection. As a summer-season green, it diversifies micronutrient intake beyond typical year-round spinach varieties, contributing to comprehensive phytonutrient diversity—a key longevity marker. Its heat tolerance makes it accessible to home gardeners in warm climates, supporting local food security.

Health Benefits (5)

• Supports bone health and fracture prevention through high vitamin K content

  strong
  Vitamin K activates osteocalcin, a bone matrix protein essential for calcium binding and bone mineralization. The 337 mcg per 100g significantly contributes to daily requirements (120 mcg for women, 90 mcg for men).
• Promotes cardiovascular health through potassium and magnesium content

  strong
  Potassium regulates blood pressure by counteracting sodium and supporting endothelial function. Magnesium relaxes vascular smooth muscle and supports healthy arrhythmia prevention.
• Supports collagen synthesis and immune function via vitamin C

  strong
  Vitamin C (30 mg per 100g) is a cofactor for prolyl and lysyl hydroxylase enzymes required for collagen cross-linking. It also enhances neutrophil function and reduces infection risk.
• Provides antioxidant protection with lower oxalate burden compared to common spinach

  moderate
  Vitamin E and bioactive polyphenols neutralize oxidative stress. Lower oxalate content improves mineral bioavailability and reduces kidney stone risk in susceptible individuals.
• Supports metabolic health through low glycemic impact and fiber content

  moderate
  The 1.5 g fiber per 100g slows glucose absorption, promoting stable blood sugar. Low carbohydrate density (2.5 g) minimizes insulin demand.

Food Pairings

• ·Pair with olive oil because fat-soluble vitamin K requires dietary lipids for absorption and transport
• ·Combine with citrus (lemon, orange) because vitamin C enhances non-heme iron absorption from the 0.8 mg iron content
• ·Mix with calcium-rich foods (yogurt, tahini) because vitamin K activates osteocalcin, which requires adequate calcium for bone mineralization
• ·Serve with garlic because allicin compounds support vascular health synergistically with potassium and magnesium

Practical Tips

• ·Store in a sealed plastic bag in the refrigerator crisper drawer for up to 5-7 days; wash gently just before use to preserve vitamin C content
• ·Consume raw in salads or lightly wilted (30 seconds in hot water) to preserve heat-sensitive vitamin C while making vitamin K more bioavailable
• ·Harvest or purchase younger leaves for tenderness and milder flavor; mature leaves develop slightly tougher texture but remain palatable
• ·Grow in home gardens during summer months in warm climates as it outperforms common spinach in heat stress, ensuring consistent fresh supply

Optimal Timing

As a low-calorie, nutrient-dense vegetable with no stimulants or sleep-affecting compounds, New Zealand spinach can be consumed any time of day. Midday or evening consumption with fat sources optimizes vitamin K absorption.

Ideal as part of mixed green salads or cooked dishes throughout the day. No timing restrictions apply.

Concerns

• · High oxalates