Endive

Endive (Cichorium endivia) is a biennial grown as an annual, producing rosettes of deeply cut or broad, slightly bitter leaves prized in salads and cooked dishes. It ranges from finely fringed curly-leaf types to broad-leaved escarole varieties, all sharing a characteristic pleasant bitterness and crisp texture. Endive tolerates light frost and performs best in cool conditions with rich, well-drained soil. It is a hardy, productive salad crop that can be harvested as baby leaf or grown to full maturity.

Growing

Sow seeds 1 cm deep directly into prepared ground or containers once soil temperature reaches 10 °C. Thin or transplant seedlings to 38 cm spacing when they have developed their first two true leaves — indoors, this takes roughly 3–4 weeks from germination. For transplants started under cover, prick out at 3 cm spacing and move to final positions at 38 cm. Germination takes 7–10 days at soil temperatures between 10 and 21 °C. Choose a full-sun position in rich, well-drained soil with a pH of 5.5–6.5, enriched with well-rotted compost.

Care

Keep soil consistently moist throughout growth; uneven watering encourages bitterness and premature bolting. Apply an organic liquid fertiliser once plants are half-grown. To reduce bitterness, blanch the hearts by gathering outer leaves over the centre and securing them loosely for 7–10 days before harvest — do this only when foliage is dry. Remove yellowing outer leaves regularly. No staking is required.

Harvest

Cut baby leaves from 33 days after sowing once they reach 8–10 cm height. For full-sized heads, harvest at 52 days when the rosette is firm and fully developed. Cut the whole head at the base or pick outer leaves progressively to extend the harvest window. Plants are frost-tolerant and can stand in the ground through light frosts, which further mellows the bitterness.

In the kitchen

Use raw in salads to add a pleasantly bitter, nutty flavour, or combine with sweet dressings, fruits, and walnuts to balance the bitterness. Endive wilts quickly in heat, so add to hot dishes at the last moment — it is excellent braised or sautéed in olive oil with garlic. Curly-leaf types work well as a garnish or microgreen; broad-leaved escarole types are ideal for soups and stews. Seeds can also be sprouted for use in salads and sandwiches.

Storing

Unwashed heads keep in the refrigerator crisper drawer for up to 2 weeks when wrapped loosely in a damp cloth or paper towel and placed in a perforated bag. Baby leaves keep 3–5 days refrigerated in a sealed container. Do not freeze fresh endive — blanched and cooked leaves can be frozen for up to 3 months.