Coreopsis Grandiflora 'Sun Up' is a compact perennial which produces an abundance of brilliant golden-yellow, semi-double flowers, adorned with several rows of wonderfully ruffled petals. This is one of the earliest Coreopsis to bloom, beginning in late spring and continuing to late summer if spent flower shoots are removed. The blossoms are borne on upright stems which sway gently in the breeze atop the finely divided foliage. This tough plant has excellent heat and drought tolerance once established. Perfect for small gardens and containers.