 | Cardoon (Cynara cardunculus). Perennial vegetable or ornamental plant Description: Spiny, gray-green foliage forms a large mound from which the tall flower stalks arise; the inedible, purple, thistle-like flowers in summer are smaller than those of its relative, the Globe Artichoke Habit: Grows 3 to 6 feet high and up to 4 feet wide Culture: Prefers full sun and rich, well-prepared soil with even moisture; drought tolerant once established Hardiness: Cold hardy to USDA Zone 7 Origin: Southern Europe... - Cardoon (Cynara cardunculus). |
