Introduction & History

Good King Henry is the forgotten perennial vegetable of medieval Europe — a spinach that comes back every year without replanting, produces edible shoots, leaves, and flower buds in succession from spring to summer, and thrives in the rich soil near farmyards and village greens where it was once as common as dandelions. Named after Henry IV of Navarre (or possibly after the benevolent house-spirit Heinz-el-Männchen — no one is quite sure), this plant was the go-to green before New World spinach arrived and stole its job.

History & Origin

Native to central and southern Europe, growing in nutrient-rich soil near villages, farms, and waste ground. Cultivated as a pot herb since at least the Middle Ages — it was the standard perennial spinach of the European peasant garden for centuries. Naturalised in Britain, Scandinavia, and parts of North America. Largely displaced by annual spinach (Spinacia oleracea) after the 16th century and now rare in gardens.

Botanical Description

Upright, clump-forming perennial, 40–80 cm tall, with fleshy, triangular to arrow-shaped leaves 5–10 cm long, dark green, slightly mealy (covered in minute, waxy granules on the underside). The stems are stout and often reddish. Flower spikes are dense, terminal, greenish-yellow, with tiny, inconspicuous flowers. The plant produces a thick, fleshy rootstock that enables its perennial habit.

Planting & Cultivation

Sow seed in spring, 1 cm deep, in rich, moist soil. Germination takes 14–21 days. Thin to 30 cm apart. Or plant divisions in spring. Full sun to part shade. Prefers fertile, nitrogen-rich soil — the kind found near compost heaps, manure piles, and poultry runs. The plant is slow to establish in its first year but becomes productive from year two onward.

Cultivation Details

Feed generously with compost or well-rotted manure — this is a hungry plant that responds to fertility. Keep moist, especially during leaf harvest. Mulch with organic matter. Earth up the emerging shoots in early spring to blanch them (like asparagus). Remove flower spikes to prolong leaf production, or let some flower for their broccoli-like buds. The plant improves with age, becoming more productive each year.

Climate & Hardiness

Hardy in zones 3–8. Tolerates cold to −30 °C. Prefers cool, moist climates. Less vigorous in hot, dry summers. Native to continental European climates with cold winters and moderate summers. An excellent perennial green for cold-climate gardens where annual spinach struggles.

Seasonal Care

Early spring: earth up emerging shoots for blanched asparagus-like spears. Spring: harvest young leaves and shoots. Summer: harvest flower buds before they open (use like broccoli). Allow some plants to flower for seed. Autumn: feed with compost. Winter: fully dormant — no care needed.

Propagation

Seed: sow in spring, 1 cm deep. Germination 14–21 days. Division of established clumps in spring or autumn. Self-sowing occurs if flowers are allowed to set seed. The plant establishes slowly — patience in year one is rewarded by years of production.

Diseases & Pests

Leaf miners occasionally create tunnels. Slugs eat young shoots. Downy mildew in wet, humid conditions. Otherwise trouble-free. The mealy leaf coating provides some protection against pests.

Culinary Uses

Three harvests from one plant: (1) blanched shoots in early spring — eat like asparagus with butter; (2) young leaves — cook as spinach, add to soups, or sauté with garlic; (3) unopened flower buds — steam or sauté like broccoli florets. The flavour is mild, spinach-like, slightly mealy. In medieval English cookery, it was a standard pot herb. The leaves are high in iron and vitamin C.

Medicinal & Aromatherapy

Traditional laxative (the seeds were used as a mild purgative). The leaves are a poultice for skin ailments in folk medicine. Rich in iron, vitamins A and C. No significant modern medicinal use — valued primarily as a nutritious perennial vegetable. Generally safe.

Container & Companion Growing

Container Growing

Possible in large containers (30 cm+) with rich compost. The plant produces less in pots than in the ground but the perennial nature makes it a low-maintenance container edible for shady balconies. Water and feed regularly.

Companion Planting

Grow in the perennial vegetable section alongside other perennial edibles: asparagus, rhubarb, and perennial kale. The rich soil near compost heaps suits it perfectly. In a historical herb garden, it provides context for the medieval kitchen garden.

Common Mistakes to Avoid

Expecting a productive plant in year one (it takes 2–3 years to establish fully). Not providing rich enough soil (this plant is a heavy feeder). Ignoring the blanched-shoot harvest (the best-tasting part). Letting it flower without harvesting the buds first. Confusing with fat hen (Chenopodium album), its annual relative, which is also edible.

Harvesting & Preservation

Harvest young shoots in early spring (blanched under a pot or bucket for the tenderest, mildest spears). Pick young leaves throughout spring and early summer. Harvest flower buds before they open — these are the 'broccoli' of the plant. Use all parts fresh; they do not dry or freeze particularly well. The flavour coarsens after flowering.

Frequently Asked Questions

Seasonal Care Calendar