Delphinium: Tall queen of the perennial border The Stateliest of All Hardy Blue-flowered Herbaceous Perennials (Delphin’ium). Hardy perennial and annual plants of varying heights which bloom in June and July chiefly; the original species or wild types from which the modern beautiful varieties are descended are natives of California, Siberia, Syria, India and other countries. Delphinium Ajacis, originally from eastern […]