The culture of xeranthemum is very simple. Seeds are usually sown in the open, where the plants are to stand; but they may be started outdoors and the seedlings transplanted. Hardy or half-hardy annuals. | The culture of xeranthemum is very simple. Seeds are usually sown in the open, where the plants are to stand; but they may be started outdoors and the seedlings transplanted. Hardy or half-hardy annuals. |