Most delphiniums are hardy perennials, but annual and biennial varieties are also available. ... Delphiniums need care to keep them looking good. They need protecting from slugs in spring, staking, moist soil and plenty of feeding.
Delphinium is a perennial favorite as the tall spikes of blue flowers in the background of a stately English or cottage garden. The modern delphinium flower may be a single or double rosette in popular blue or red, pink, white, violet and yellow.
“Delphiniums prefer a deep, organic-rich soil but, with some care, can be grown in about any type,” he says. “By planting them in the early spring, they usually bloom the first year. Because they are so quick to bloom, many people treat them as annuals, buying new plants every year.. . . . .364011234936!]