Growing Cardoon (Cynara): Dramatic Silver Foliage & Edible Thistle Relatives

Cynara (Cardoon) – Architectural Silver-Gray Foliage for Borders & Containers

Pronunciation: sih-nar'-ah

This genus includes the edible globe artichoke (C. scolymus) and the ornamental spineless cardoon (C. cardunculus 'Porto Spineless'). The silver-gray, serrated foliage of the spineless variety makes a dramatic statement and attracts beneficial insects. Violet-blue flower heads with spiny bracts develop on branched, woolly stems in the second year (where hardy) and can be cut for fresh or dried arrangements.

Light & Water

Full sun. Water thoroughly after planting; then weekly soak during first summer unless rainfall >1 inch/week. Established plants are drought-resistant.

Soil & Fertilizer

Average garden soil. No fertilizer at planting or first season. Established: light application of balanced granular fertilizer (10-10-10 or organic) once in early spring. If using water-soluble, follow label carefully.

Continuing Care

• Foliage improves if flower stems are cut as they appear.
• Protect from strong winds.
• In colder parts of Zone 7, apply dry winter mulch of pine needles.
• Slugs and aphids can be problematic.