Delphiniums are true cottage garden classics best known for their towering flower spikes, packed with blossoms in shades of blue, purple, pink, and the occasional red! Blooming spring through summer, these perennial Delphinium plants will offer a bounty of blooms that are cherished equally indoors and out. Whether growing Delphiniums for cut flowers or to add height, color, and drama to your flowering beds, shop all of Annie’s perennial Delphinium selections below.