Orach.

At a glance

Care level

Easy

Plant type

Annual vegetable

Light

Full sun

Indoor light

Direct sun

Water

Every 2 to 4 days

Mature size

6 feet

Growth rate

Fast

Hardiness

USDA 3 to 9

Bloom time

Mid to late summer

Care

Keep the soil consistently moist to prevent the plant from bolting too early in the heat. Watch for leaf miners or aphids on the undersides of the leaves. Harvest the younger leaves for the best flavor.

Watering

Water regularly to keep the soil evenly moist but not waterlogged.

Feeding

Apply a balanced organic fertilizer once a month during the active growing season.

Pruning

Pinch back the tops to encourage bushier growth and delay flowering.

Repotting

As an annual, this plant is typically grown directly in the garden and does not require repotting.

Soil

Well draining, fertile soil

Soil pH

6.0 to 7.5

Temperature

-10 to 35°C

Humidity

30 to 70%

Drought tolerance

Moderate

Lifespan

Annual, completes its life cycle in one season.

Deer and rabbits

Moderate

Safety

People

The leaves are generally safe to eat but contain oxalic acid which can be irritating in large quantities.

Children

No specific risks exist for children, though the plant is best kept out of reach of very young toddlers to prevent accidental ingestion.

Contact allergens

Handling the foliage may cause mild skin irritation in sensitive individuals.

Airborne allergens

The windborne pollen can trigger seasonal allergies in susceptible people.

Edibility

This plant contains oxalates and should be consumed in moderation by those prone to kidney stones.

How to identify it

• Arrow shaped or triangular leaves
• Vibrant purple, red, or green foliage
• Small clusters of inconspicuous flowers
• Tall, upright central stem

Height

0.6 to 1.8m

Spread

0.3 to 0.6m

Leaves

green, purple, red, deciduous

Flowers

green, yellow, 0.2 to 0.5cm

Fruit

brown, Late summer to autumn

Common problems

• Leaf miners — Small larvae tunnel inside the leaves leaving visible trails.
• Downy mildew — Fungal growth appearing as yellow patches on the upper leaf surface.

Growing it

Propagation

seed

When to plant

spring

Overwintering

As an annual, it will die back with the first hard frost and does not require winter protection.

In containers

It grows well in containers at least 30 cm deep, provided they are kept well watered.

Plant orach in a sunny spot with consistent moisture to ensure the best leaf production.

Grows well with

• Lettuce — They share similar water and light requirements in the garden.
• Radish — Radishes grow quickly and occupy the space well alongside orach.

Similar species

• Spinach — Both are used as leafy greens but spinach is less heat tolerant.
• Lambs quarters — A close relative that is also edible and grows in similar conditions.

Science

Family

Amaranthaceae

Genus

Atriplex

Order

Caryophyllales

Class

Magnoliopsida

Native range

Central and Western Asia

Conservation

This species is widespread and not of conservation concern.

It is a hardy annual that thrives in disturbed soils and is well adapted to saline environments.

Value to wildlife

nectar source

Pollinators

bees, beetles

Uses

culinary greens, ornamental garden plant, dye plant

Taxonomy resolved against GBIF.

Questions people ask

Does orach taste like spinach?

Yes, it has a similar mild, slightly salty flavor.

When should I harvest the leaves?

Pick the young, tender leaves before the plant begins to bolt.

Where the name comes from

The genus name Atriplex is derived from the ancient Latin name for this plant, while hortensis means of the garden.

Good to know

• Orach is also known as mountain spinach.
• The red variety is often grown as an ornamental for its striking foliage.
• It is highly salt tolerant and thrives in soils where other greens struggle.
• The plant self sows readily if allowed to go to seed.