How to grow orach
Overview
Orach (Atriplex hortensis), also known as mountain spinach, is a fast-growing leafy vegetable prized as a warm-weather substitute for true spinach. It thrives in hot conditions and produces tender leaves that can be harvested continuously. Regular picking is essential to keep plants productive and delay bolting.
Varieties
- Red Orach — Burgundy-red leaves that add striking colour to salads and hold their hue when cooked.
- Green Orach — Classic green form with tender, spinach-like leaves and reliable growth.
- Golden Orach — Yellow-green foliage that brightens the garden and is equally edible.
Soil Preparation
Prefers well-drained, fertile soil with pH 6.0–7.5. Enrich with compost or well-rotted manure before planting. Good drainage is critical to prevent root rot.
Growing Guide
Sow seeds directly into well-drained soil in full sun at 5–10 mm depth, spacing 30–40 cm apart. Thin seedlings to 30 cm. Keep soil evenly moist. Orach benefits from succession sowing every 3–4 weeks for a steady supply. Pinch out flower buds as they appear to prolong leaf harvest.
Sowing
Sow seeds directly 5–10 mm deep, 30–40 cm apart. Germination takes 7–14 days. Direct sowing is easiest; seedlings can also be raised in punnets for transplanting.
Care
Feed with a balanced liquid fertiliser every 4–6 weeks to maintain vigorous growth. Water consistently, especially during dry spells, to prevent leaves from becoming tough. Remove flower stalks promptly to extend the harvest season.
Companion Planting
Good companions include lettuce, peas, beans, and carrots. Avoid planting near fennel, as it may inhibit growth. Orach can also be interplanted with corn for partial shade in hot weather.
Common Pests & Risks
Aphids and leaf miners are common pests. Control aphids with a strong water spray or insecticidal soap. Remove affected leaves to manage leaf miners. Ensure good air circulation to reduce humidity-related issues.
Harvesting
Begin harvesting outer leaves when they reach 5–10 cm long. Regular picking encourages tender new growth and delays bolting. Cut leaves at the base, leaving the central rosette intact.
In the Kitchen
Use young leaves raw in salads or cooked like spinach. Orach has a mild, slightly tangy flavour. Leaves store in the refrigerator for a few days in a sealed plastic bag.
Troubleshooting
Yellow leaves: overwatering or poor drainage; reduce water and improve soil. Small, tough leaves: lack of water or nutrients; water more and apply fertiliser. Premature bolting: stress from heat or inconsistent moisture; pinch flower buds and provide light shade. Leaf miners: silver trails on leaves; remove infested leaves and use row covers. Aphids: stunted growth; spray with neem oil or insecticidal soap.