globe thistle Echinops ritro Type:perennials that last Notable Traits:attracts butterflies/pollinators, great cut flowers, outstanding winter interest, resistant: deer, resistant: disease, resistant: rabbit, tolerates clay soil, tolerates harsh roadside conditions Hardiness:Zone 3 – 8 Mature Height:24-36in Light:sun (8+ hrs) Water:drought tolerant Bloom Color:blue Bloom Shape:globe Bloom Time:fall, summer Foliage:green Description Glaucus, yucca-like foliage topped with clusters of blue, globe-shaped flowers in late summer through early fall. Wonderful ornamental qualities with excellent drought and heat tolerance.