Blue Hedgehog

Echinops ritro (EK-in-ops REE-troh)

Family: Asteraceae Non-native Herbaceous (3-15 ft)

Globe thistle is a clump-forming, herbaceous perennial native to central and southeastern Europe and central Asia, and found on stony slopes or grasslands. It has a compact habit, grows 3 to 4 feet tall, and 2 to 2.5 feet wide. It has erect grayish-white stems, grayish-green, stiff, spiny leaves, and bright blue spherical flowerheads. It is a member of the daisy family (Asteraceae). The genus name, Echinops , is derived from two Greek words: echinos, meaning "hedgehog," and ops , meaning "appearance." This refers to the plant's unique flower heads. Performs best in full sun, but will tolerate partial shade. This plant is easily grown in a variety of soils: chalk, loam, and sand. It thrives in poor to average, medium-moist to dry, well-drained conditions. Once established, these plants are drought-tolerant. Avoid wet, soggy, or rich organic, amended soils. Deadheading spent blooms will encourage reblooming. Best propagated by seeds in the spring and will self-seed. Deadhead before the seed sets, if seedlings are not wanted. It is tolerant of drought, deer, and rabbits. The blooms are very attractive to bees and butterflies. The blooms appear mid-summer through September, and the gray-green hairy leaves are also attractive. For peak color and sturdy plants, plant in full sun at the back of the perennial border, cutting garden, or cottage garden. The blue globe flowers will add interest and contrast to your garden. When used in dried floral arrangements, cut the flowers when young and place them in a warm, dry room to keep the deep blue color. Insects, Diseases, and Other Plant Problems: No significant insect pests or diseases. Monitor for aphids, leaf miners, thrips, slugs, and snails. Overwatering or poor air circulation can cause root rot and powdery mildew. Stems may be lanky or floppy if grown in partial shade or in rich soils. Staking is sometimes required. Due to its tap root, division and transplanting can be difficult.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 61 attributes.