'Horn of Plenty' Clematis is an early flowering deciduous vine. Blooms starting in early summer, after first flush of flowers, prune back top 1/3 of vine to encourage a second late summer bloom. Large purple, star shaped flowers with a rosy tint have a distinct red bar in the center on each petal. Full sun to part shad. Clematis prefer to have roots shaded, mulch in the summer time is key for this plant.