The deep yellow petals of 'Jethro Tull' Tickseed are fluted like little tubes, providing a long blooming summer show. It is a hybrid cross of Coreopsis auriculata 'Zamfir' (female parent) and Coreopsis lanceolata 'Early Sunrise' (male parent). Another winner from the people who brought you the Big Sky™ series of Coneflowers.