Selected in New Zealand, the New Millennium Delphinium strains outperform all other tall types and offer some astonishingly rich shades. This mix produces tall, stately spires in a range of shades from white through pink, lavender, blue, mauve and deep purple. The deeply-cut leaves form a medium-sized bushy mound with superior vigour. Stems may require staking in windy areas, best done before they reach 3 feet or so in height. Removing spent spikes right after flowering will encourage repeat blooming in fall. In hot, humid summer regions Delphinium plants do not usually last more than 2 to 3 years. Foliage may become infected with powdery mildew in mid summer; simply cut back hard to encourage fresh leaves or use a preventative fungicide beginning in mid spring. For best flowering use a high phosphorous fertilizer each year, in early spring. CAUTION: Harmful if eaten.