Pacific Giants Mixed Delphinium Seeds 6435. Large, graceful spikes filled with 5 cm (2″) double florets burst out into colour at the top of these sturdy plants. A well balanced blend of solids and bi-colours. Foliage is mildew resistant and the tall plants are good for the background in the perennial border. Garden height of 150 cm (5′). Cut back plants after flowering is complete to encourage a second bloom for later in the summer. Hardy to Zone 4.
How to Grow
350 seed/gram. Easy to grow, adaptable to most soils, trouble free and tolerant of heat and drought. Start seed 8 to 10 weeks early indoors. Chill seed for 24 hours prior to sowing. Germinate at 18 C (65 F) then grow on under lights at cooler temperatures of 15-18 C (60-65 F) before hardening off and transplanting to a sunny site.