Salsify

Salsify (Tragopogon porrifolius) is an ancient biennial root vegetable in the daisy family, closely related to scorzonera. Its slender, pale yellow taproots carry a subtle oyster-like flavour that intensifies after frost. The plant is undemanding but requires a long growing season and deeply cultivated, stone-free soil. Purple flower heads appear in the second year if roots are left in the ground.

Growing

Direct sow into the final growing position as soon as the soil has thawed and dried sufficiently and soil temperature reaches at least 5 °C. Sow seeds 2 cm deep in rows 40 cm apart. Thin seedlings to 10–15 cm within the row once they reach 5 cm tall. Do not transplant — salsify develops a long taproot that resents disturbance. Germination takes 6–15 days. The crop needs a full long season of at least 110 days to develop roots of useful size.

Care

Keep the bed consistently moist during germination and root establishment, then water deeply but infrequently to encourage downward root growth. Mulch between rows to suppress weeds and retain moisture. Feed with a low-nitrogen, high-potassium fertiliser mid-season to encourage root development rather than leafy growth. The roots are frost-hardy and can remain in the ground through winter; frost actually improves the flavour.

Harvest

Roots are ready to lift once they reach pencil thickness or greater, typically from late in the growing season onward. The best eating quality develops after several hard frosts have sweetened the starch. Dig carefully with a fork to avoid snapping the brittle roots. Roots left in the ground over winter can be harvested throughout the cold period as needed, making this a valuable overwintering crop.

In the kitchen

Scrub or peel roots and immediately place in acidulated water to prevent browning. Roast, steam, boil, or fry in butter — the cooked flesh has a delicate oyster-like flavour. Use in gratins, soups, or as a side vegetable. Young leaves and flower buds are also edible raw in salads.

Storing

Freshly dug roots store well in a cool cellar or refrigerator, packed in slightly damp sand, for several weeks. Alternatively, leave roots unharvested in the ground and lift as needed through the cold season. Blanched and frozen roots keep for up to six months.