Delphinium, Fordhook Cottage Garden Mix Elegant selection with strong stems and vivid flowers. Burpee Exclusive Our own blend of white, sky and deep purple-blue delphiniums. Tall, sturdy, floriferous plants topped with sturdy spikes make music in the cottage garden. We find this selection especially elegant, the plants staying upright and stems dependably strong. Extra-floriferous, these are favorites for cottage gardens and fresh bouquets.