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Horned Tetragon in plant - Tetragonia tetragonioides (expansa)

Tetragonia tetragonioides
New Zealand Spinach, Warrigal Greens, Botany Bay Spinach, Tetragon

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An annual vegetable plant that grows up to 40 to 60 cm (16 to 24in) tall and spreads on the ground. The New Zealand spinach is cultivated for its fleshy, wavy, bright green leaves that can be consumed raw or cooked, just like spinach. Plant it after the frost and harvest as needed, from July to September.
Ease of cultivation
Beginner
Height at maturity
50 cm
Spread at maturity
1 m
Exposure
Sun, Partial shade
Soil moisture
Moist soil
Best planting time April to May
Recommended planting time March to June
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Flowering time August
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M
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Harvest time July to October
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Description

The Horned Sea Purslane, in Latin Tetragonia tetragonioides (or expansa)also known as New Zealand Spinach or summer spinach, is an annual vegetable plant with a creeping growth that reaches an average height of 50 cm (20in). It is cultivated for its tasty and fleshy leaves that are used cooked or raw as a garnish like spinach. It is planted in spring, after the last frost, with harvesting taking place throughout the summer.

It is a vigorous plant that resembles spinach while offering a unique iodine flavor. Horned Sea Purslane has the characteristic of being heat-tolerant as long as the soil remains slightly moist. Under good growing conditions, it is possible to harvest around 3 kg of leaves per square meter in one season.

New Zealand Spinach is not, from a botanical point of view, actual spinach, but rather a distinct species. It is an annual plant that belongs to the Aizoaceae family, a group that usually includes plants that are highly resistant to drought. It gets its name, Horned Sea Purslane, from the shape of its seeds, which have four sides.

Commonly grown in traditional vegetable gardens, Horned Sea Purslane seems to be making a comeback in recent years because, in terms of flavor, it is far from being a pale imitation of spinach: it is similar, but its leaves are more fleshy and have a very interesting hint of iodine. Many chefs have been incorporating it into their menus in recent years.

In the kitchen, Horned Sea Purslane is prepared and consumed like spinach, either raw or cooked, in salads, steamed, or quickly sautéed in a pan. It is a vegetable rich in vitamin C and minerals.

This plant develops quite rapidly to form an spread-out tuft that can reach up to 60 cm (24in) in height at maturity. Its leaves are diamond or triangular in shape, measuring up to 15 cm (6in) long. They are thick, wavy, and glossy green. Yellow flowers bloom in summer at the axils of the leaves, and the fruits are capsule-shaped and covered in small prickles. Unlike spinach, it does not easily go to seed, even during episodes of extreme heat.

Harvest: The harvest of New Zealand Spinach takes place approximately 3 months after sowing, or two months after planting, leaf by leaf, depending on their growth and the needs. The leaves located around the base of the plant are cut, allowing the center to continue developing and producing new leaves.

Storage: New Zealand Spinach does not keep well in the refrigerator as it tends to wilt. It is best to consume it a few hours after harvesting. However, you can freeze it after blanching it for 3 minutes in salted boiling water.


Gardener's tip: Beware of attacks from slugs and snails. To limit watering, we recommend, once the soil has warmed up well, mulching the soil with thin successive layers of grass clippings, preferably mixed with dead leaves. This protection, which keeps the soil moist, also helps limit weed growth.

Harvest

Harvest time July to October
Type of vegetable Leaf vegetable
Vegetable colour green
Size of vegetable Medium
Interest Flavour, Nutritional value, Productive
Use Table, Cooking

Plant habit

Height at maturity 50 cm
Spread at maturity 1 m
Growth rate very fast

Foliage

Foliage persistence Annual
Foliage colour green
Product reference175931

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17
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Planting and care

The planting of the horned tetragon generally takes place in mid-May, when all risk of frost has been eliminated. In the South of France, it can be planted as early as mid-April.

Respect a spacing of 70 to 80 cm (28 to 32in) between plants.

Cultivation:

New Zealand spinach is a fairly demanding vegetable, especially in terms of nitrogen and potassium. It requires well-fertilized soil. It is advisable to apply mature compost (about 3 kg per m2) in advance, preferably in autumn, by scratching it to a depth of 5 cm (2in), after having loosened the soil, as is the case for all vegetable crops. An application of nitrogenous fertilizer such as "blood and horn" is often welcome. It prefers neutral to slightly acidic soils (pH between 5.5 and 7).

The young plants are sometimes a bit slow to start, so closely monitor watering and pinch the tips of the stems to encourage branching.

This is a plant that covers the ground extensively, so don't hesitate, if your vegetable garden is small, to associate it with other vertically growing vegetables like tomatoes.

16
14,50 € Each
6
19,50 €

Cultivation

Best planting time April to May
Recommended planting time March to June

Care

Soil moisture Wet
Disease resistance Good

Intended location

Type of use Vegetable garden
Ease of cultivation Beginner
Soil light, rich
Exposure Sun, Partial shade
Soil pH Any
Soil type Silty-loamy (rich and light), 130

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