Radish

Radish is a fast-maturing root vegetable in the mustard family, producing crisp, peppery taproots that range from small round globes to long cylindrical forms and large winter storage types. Originally domesticated in Asia, it is now grown worldwide and valued for filling gaps between slower crops. The entire plant is edible — roots, leaves, and seed pods all carry the characteristic sharp flavour. It thrives in cool conditions and bolts quickly in sustained heat, so timing sowings to avoid peak summer temperatures is key.

Growing

Direct sow seeds 1–2 cm deep once soil reaches 5 °C. Space seeds 1–3 cm apart within rows, with rows 10–20 cm apart; thin small varieties to 2–3 cm once cotyledons are fully open. Sow in successive batches every two to three weeks to maintain continuous harvest. For an extended season, use a cold frame or unheated greenhouse for early and late sowings. Summer radishes mature in 23–30 days; daikon and winter types need 45–60 days.

Care

Keep soil consistently moist — irregular watering causes cracking and pithy roots. Radishes need little feeding; excess nitrogen promotes leaf growth at the expense of root development. Weed diligently in the first two weeks while seedlings are small. Protect against flea beetle with fine insect mesh, especially in warm, dry conditions. No staking or pruning required.

Harvest

Pull summer varieties as soon as roots reach their characteristic size — typically 2–3 cm diameter for round types. Check by gently exposing the root shoulder; the skin should be smooth and taut. Harvest promptly: roots left in the ground beyond peak quickly become pithy and hollow. Winter and daikon types can remain in the ground longer and tolerate light frost in the root zone. Cut leaf radishes as baby greens from 10–15 days, or wait for full-sized leaves at 25–35 days.

In the kitchen

Slice raw into salads, use as a crudité with dips, or add to slaws for crunch and heat. Quick-pickle thin rounds in rice vinegar with sugar and salt for a versatile condiment. Daikon and winter types are excellent braised, stir-fried, or grated into dressings. The leaves are mild and work well in woks, soups, or kimchi. Microgreens add a spicy accent to sandwiches and grain bowls.

Storing

Freshly harvested summer radishes keep in the refrigerator, tops removed and lightly dampened in a sealed bag or container, for up to one week. Winter radishes and daikon store for two to three months in a cool cellar or root store at 0–4 °C, ideally packed in slightly damp sand. Washed and sliced roots can be pickled in brine or vinegar and kept refrigerated for up to four weeks.