New Zealand Spinach
Tetragonia Tetragonioides
New Zealand Spinach, also known as Warrigal Greens, is a nutritious leafy green native to New Zealand and Australia. This versatile plant is prized for its ability to thrive in various conditions and is often used in salads and cooked dishes. Its unique flavor and ease of care make it a favorite among gardeners.
Everything it needs
9 essentials at a glance
Watering
Water New Zealand Spinach regularly to keep the soil consistently moist but not soggy.
During the growing season, water every 3-5 days, adjusting frequency based on rainfall and temperature. In cooler months, reduce watering to once a week. Signs of over-watering include yellowing leaves and root rot, while under-watering can cause wilting and leaf drop.
Light
New Zealand Spinach thrives in full sun but can tolerate partial shade.
Ideally, it should receive at least 6-8 hours of direct sunlight daily. In extremely hot climates, some afternoon shade can help prevent leaf scorch.
Soil
This plant prefers well-draining soil with a pH range of 6.0 to 7.0.
A mix of potting soil, compost, and sand or perlite is recommended to ensure good drainage. Avoid heavy clay soils that retain too much moisture.
Humidity
New Zealand Spinach prefers moderate humidity levels, around 40-60%.
To increase humidity, mist the leaves regularly or place a humidifier nearby. Signs of low humidity include browning leaf tips and stunted growth.
Temperature
The ideal temperature range for New Zealand Spinach is between 60-75°F (15-24°C).
It is hardy in USDA zones 9-11. Protect the plant from frost, as it does not tolerate cold temperatures well, and can suffer in extreme heat above 90°F (32°C).
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10, applying every 4-6 weeks during the growing season.
Reduce fertilization in fall and winter. Signs of nutrient deficiency include yellowing leaves and poor growth, indicating a need for more nutrients.
Pruning
Prune New Zealand Spinach in early spring to encourage bushier growth.
Use clean, sharp scissors or pruning shears to remove any dead or damaged leaves. Deadheading is not necessary, but removing spent flowers can promote better leaf production.
Repotting
Repot New Zealand Spinach every 1-2 years or when it becomes root-bound.
Choose a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. When repotting, gently remove the plant from its pot, loosen the roots, and place it in fresh soil.
Propagation
New Zealand Spinach can be propagated through seeds or stem cuttings.
For seeds, sow them directly in the garden after the last frost, spacing them 12 inches apart. For stem cuttings, take 4-6 inch cuttings in spring, remove lower leaves, and place them in moist potting mix until roots develop, usually within 2-4 weeks.
When it's unhappy
Yellow leaves
Why it happens
This can be caused by over-watering or nutrient deficiency.
How to fix it
Check soil moisture levels and adjust watering frequency. If nutrient deficiency is suspected, apply a balanced fertilizer.
Wilting leaves
Why it happens
Under-watering or extreme heat can cause wilting.
How to fix it
Increase watering frequency and provide shade during the hottest part of the day.
Leaf drop
Why it happens
This can occur due to sudden temperature changes or stress.
How to fix it
Maintain consistent watering and temperature conditions to reduce stress on the plant.
Pest infestations (aphids, spider mites)
Why it happens
Pests can attack the plant, especially in dry conditions.
How to fix it
Inspect regularly and treat infestations with insecticidal soap or neem oil.
Powdery mildew
Why it happens
High humidity and poor air circulation can lead to this fungal disease.
How to fix it
Ensure good air circulation around the plant and avoid overhead watering. Treat with fungicide if necessary.
Care through the year
Spring
In spring, sow seeds directly in the garden after the last frost. Water regularly and apply a balanced fertilizer to promote growth.
Summer
During summer, ensure the plant receives adequate water, especially in hot weather. Provide some afternoon shade if temperatures exceed 90°F.
Fall
In fall, continue to water as needed, but reduce fertilization. Harvest leaves regularly to encourage new growth.
Winter
In winter, protect the plant from frost and cold temperatures. If growing in containers, consider bringing them indoors or to a sheltered location.
Toxicity & Safety
New Zealand Spinach is non-toxic to pets and children. It is safe to consume and is often used in salads and cooked dishes. However, excessive consumption may lead to digestive upset due to its oxalate content.
Good to know
How often should I water my New Zealand Spinach?
Water New Zealand Spinach every 3-5 days during the growing season, ensuring the soil remains consistently moist but not soggy.
What is the best light for New Zealand Spinach?
New Zealand Spinach thrives in full sun, requiring at least 6-8 hours of direct sunlight each day for optimal growth.
Can I grow New Zealand Spinach in containers?
Yes, New Zealand Spinach grows well in containers. Ensure the pot has good drainage and use a well-draining potting mix.
Is New Zealand Spinach frost-tolerant?
No, New Zealand Spinach is not frost-tolerant. Protect it from frost and cold temperatures to ensure healthy growth.
How do I propagate New Zealand Spinach?
You can propagate New Zealand Spinach from seeds or stem cuttings. Sow seeds directly in the garden or take cuttings in spring for rooting.
What are the signs of nutrient deficiency in New Zealand Spinach?
Signs of nutrient deficiency include yellowing leaves and stunted growth. Regular fertilization can help prevent these issues.
How do I prevent pests on my New Zealand Spinach?
Regularly inspect your plants for pests and treat infestations promptly with insecticidal soap or neem oil to keep them healthy.
Grows well with
Track this plant in your garden.
Set care reminders, log growth, and join a community of plant lovers.