Delphinium is a Perennial that likes FULL SUN. 'Blue Bird' delphinium is grown as an annual or biennial. Its mid-blue flowers have white centers. The flowers are large but short-lived and bloom on tall stems from early summer to midsummer. Grow at the back of a border or in the middle of an island bed. There is nothing quite like delphiniums in the garden. Blooms in EARLY-to-Mid Summer. Height: 4.5'-6' Space: 2'