Coreopsis, Plains, Nice Cut Flower, Yellow, 2200 Seeds! Groco PLAINS COREOPSIS (Coreopsis tinctoria) WINNER/ BUYER GETS 2200 SEEDS!! Annual Yellow/ maroon 1 to 3 ft tall Full sun Easy to grow in about any soil. Drought tolerant. Blooms May to August. Can be used as cut flower, prolific bloomer, attracts birds and butterflies. Comes with planting instructions.