Coreopsis DescriptionBotanical Name: Coreopsis grandiflora A very popular perennial late spring till autumn, with double yellow flowers. Leaves are bright green, lanceolate, 3 to 5 lobed. It has a very compact, erect growth habit. Blooms are held on long, slender stems. Deadhead for continuous blooms throughout the season. Plant CharacteristicsPlant Category: PerennialsName: CoreopsisPlant Type: Perennial Flower: Yellow, double blooms, 1" to 2 1/2" wide Mature Size: 2' x 3' Water: Moderate Exposure:: Full sun Spacing: 1 1/2' Soil Type: Clay; loam; sand; acidic; alkaline; well drained Planting Time: Any season CommentsSelf sows very easily.