The Guardian series of delphiniums have been bred to flower earlier than other varieties. Delphinium \'Guardian Blue’ will create spectacular, strong-stemmed spikes of semi-double flowers of deep blue with a clear white eye from early summer onwards. True blue is a rare colour in flowers, but delphiniums excel in this colour spectrum and make a striking feature at the back of the border. With its sturdy stems, Delphinium \'Guardian Blue’ is also well-suited to cut flower production. Height: 1.2m (4\'). Spread: 75cm (30).