Giant Scabious

Cephalaria gigantea is a statuesque, airy perennial from the Caucasus and Turkey, reaching 150–200 cm in height. It produces deeply divided, anise-scented foliage and large, pale lemon-yellow flowers with characteristic fringed petals, 5–7 cm across. It thrives in full sun to partial shade in well-drained soil and overwinters reliably outdoors in Nordic conditions. Seeds benefit from cold stratification before germination.

Growing

Sow seeds 0.5 cm deep indoors. Place the tray in a refrigerator at around 2–4 °C for 2–4 weeks to stratify, then move to room temperature or a cool greenhouse. Alternatively, sow directly outdoors in autumn to allow natural winter stratification. Keep seedlings in light shade until germinated. Germination takes 1–2 months. Grow on indoors for 6–10 weeks before transplanting outdoors once nights stay consistently above 2 °C. Space plants 30–40 cm apart in all directions.

Care

Plant in well-drained soil in a sunny or lightly shaded position. Water regularly during establishment but reduce once the plant is settled — it tolerates dry periods well. No staking is usually necessary given the stiff stems, but in exposed sites a single stake per plant helps. Feed with a balanced fertiliser once in early growth. Remove spent flower heads to extend the blooming period or allow self-seeding.

Harvest

Cut flower stems when the blooms are fully open for use as cut flowers. Flowering continues over a long period — harvest repeatedly to encourage further production. For seed collection, leave some heads to dry on the plant and collect once the seed capsules are brown and papery.

In the kitchen

Giant scabious is grown primarily as an ornamental cut flower. The tall, elegant stems with pale yellow scabious-like heads make outstanding long-lasting arrangements, working well alongside grasses and other tall perennials. The anise-scented foliage adds a subtle fragrance to fresh bouquets.

Storing

Fresh-cut stems last up to 10 days in a cool room in clean water; change water every 2 days. Dried seed heads can be stored indefinitely in a dry, dark place for decorative use or seed saving. Saved seeds remain viable for 2–3 years when stored in a sealed container in a cool, dry location.