*28-30" x 15-18" w* Fabulous for hot, dry spots 'Big Blue' has green spiky foliage supporting huge 4" diameter bracts that surround the blue center cone. This robust hybrid Sea Holly will entrance you as you watch the silvery bracts and green cones ripen to shades of shimmering blue in mid-summer. An excellent cut flower, fresh or dried. A rugged plant that offers both texture and color to the xeric garden. *Catalog/Website only.* Zones 4-9 | 5" Premium Pot Drained Soil Plant with Lavender, Echinacea 'Rocky Top'.