Start Dianthus seeds for this dark beauty! This Dianthus Sweet William with crimson-black foliage and deep violet purple flowers is one of our favorite Dianthus flowers. It's excellent in leaf and bud and even better in full flower and has a vase life of at least ten days. No old English cottage garden could possibly be complete without its share of Sweet Williams, beautiful in the border and perhaps one of the most attractive cut flowers. Easy-to-grow from Dianthus seeds, once they are established and left to themselves, they will be a welcomed addition! This Dianthus Barbatus Oeschberg is often used behind flowering ground cover plants. Deadhead spent flowers to encourage a second bloom later in the summer.