Okra

Okra (*Abelmoschus esculentus*), also known as ladies' fingers or bhindi, is a tender annual vegetable from tropical and subtropical regions. It belongs to the mallow family and produces attractive hibiscus-like flowers followed by long, tapering green pods. The young pods are picked for cooking and are a useful source of calcium.

Warmth is the key to success. In most of the UK, okra grows most reliably in a greenhouse or polytunnel. Outdoor plants need a long, hot summer and the sunniest, most sheltered position available, such as a heat-retaining patio beside a south-facing wall. Plants commonly reach 90–120cm during the season and need room, steady moisture and support.

Four or five plants usually supply enough pods for a family because established plants can crop repeatedly. Okra is therefore practical in a small greenhouse border, large pots or growing bags, provided its roots never become cold or dry.

Choose a cultivar suited to protected cultivation and capable of producing tender pods during a relatively short British summer. Nearly spineless selections are easier to handle, although the fine hairs on okra foliage and fruit may still irritate skin. Wear gloves and long sleeves when tending and harvesting plants.

Recommended variety

Okra ‘Clemson Spineless’

A popular, nearly thorn-free greenhouse cultivar that produces abundant elongated green pods over a long season. The cream flowers have a dark-red eye, and the tender pods are best picked young at about 4–5cm long.

Cultivar sourceAllotment Pro variety guide

Give okra full sun, shelter and the warmest conditions possible. A greenhouse or polytunnel is preferred. Prepare greenhouse soil with generous organic matter so it is fertile, moisture-retentive and well drained. Outdoor ground should be deeply cultivated, enriched with garden compost or well-rotted manure and allowed to warm thoroughly.

Cover an outdoor planting area with cloches or clear plastic for about two weeks before planting. This raises the soil temperature and protects the surface from heavy rain. Keep fleece or cloches ready after planting because a cool spell can check young plants severely.

For containers, use a pot at least 30cm wide and deep for one plant and fill it with peat-free multi-purpose compost. Two plants can share a standard growing bag. Large containers buffer roots against rapid drying and make it easier to move plants into shelter if temperatures fall.

Sow in March or April so plants have time to mature without becoming too large indoors. Before sowing, soak the hard seeds in warm water for about two hours. This helps moisture penetrate the seed coat and can encourage more even germination.

Sow one seed in each small pot or module filled with moist peat-free seed compost. Individual sowing avoids root disturbance when young plants are moved on. Cover the pots with a propagator lid or clear bag and keep them above 16°C. A heated propagator or warm bright windowsill is useful, but protect seedlings from cold night-time glass.

Remove the cover as soon as seedlings emerge and provide strong light so stems remain compact. Keep compost evenly moist, never saturated, and turn windowsill plants regularly. Pot seedlings on individually into slightly larger containers when roots fill their pots, handling the root ball gently.

Plant into final positions in late May or June, when seedlings are about 10–15cm tall and conditions are consistently warm. Harden off any plants destined for outdoors by gradually increasing their exposure over at least a week. Do not rush this stage: okra is more sensitive to cold than many familiar summer vegetables.

In greenhouse borders or outdoor ground, space plants between 30 and 90cm apart. Use the wider spacing where plants will branch freely and the narrower end only where airflow and access remain adequate. Set each plant at the same depth as it grew in its pot, firm gently and water with tepid water.

Protect new outdoor plants with fleece or cloches until they are established and warm weather is dependable. Vent covers on sunny days to prevent overheating, then replace protection before cool evenings.

Water regularly to keep growth steady. Greenhouse pots may need checking twice a day in hot weather because a large leafy okra plant loses water quickly. Use tepid water rather than shocking warm roots with very cold water. Water the compost or soil thoroughly, then allow surplus water to drain.

Mulch plants growing in the ground with garden compost once the soil is warm and moist. This conserves water and suppresses weeds. Ground enriched before planting should not normally need extra feeding. Feed container and growing-bag plants weekly with a high-potassium liquid fertiliser after the first flowers open to support continued flowering and pod formation.

Provide each plant with a sturdy cane, especially in a greenhouse where tall growth may become top-heavy. Tie the main stem loosely with soft material. Pinch out the growing tip when a plant reaches about 60cm to encourage side shoots and more flowering points.

Maintain good greenhouse ventilation without exposing plants to cold draughts. Damping down paths can raise humidity during hot dry spells and discourage red spider mites, while regular ventilation reduces stale conditions and grey mould. Remove yellow leaves and fallen material promptly.

Harvest usually begins in mid-summer and continues into autumn, ending outdoors with the first frost. Inspect plants frequently because pods develop quickly. Pick them while tender, generally 5–10cm long; ‘Clemson Spineless’ is particularly good harvested at about 4–5cm.

Cut pods cleanly with secateurs or a sharp knife rather than pulling them, which may damage the brittle stem. Handle pods gently because their skin marks easily. Wear gloves and long sleeves to avoid irritation from the fine hairs on leaves, stems and pods.

Frequent picking encourages the plant to keep flowering. Remove any overlooked pod that has become large, fibrous or tough so the plant does not divert energy into mature seed. Use fresh pods promptly in curries, stews, soups or quick-cooked dishes.

Most difficulties arise from insufficient warmth, uneven watering or greenhouse pests. Cold plants stop growing and may fail to flower, while drought causes flowers and young pods to drop. Start seed early under warmth, delay final planting until late May or June and maintain even moisture throughout the cropping season.

Check leaf undersides regularly. Early action is easier than controlling a large infestation in dense greenhouse foliage. Good spacing, hygiene and balanced ventilation reduce disease risk without depriving this tropical crop of warmth.

Common problems