flowers slightly less double than Golden Sphere but excellent habit and flower production
Coreopsis grandiflora Solanna™ Golden Crown
Family : Asteraceae
Few perennials produce more flower than a Coreopsis. Their long flowering period with an attractive range of colours make them deservedly popular. The Limerock series should be treated as a 1 year container or bedding plant as they are not reliably winter hardy but few plants can match their flower power.