Parentage: Sport of Double Knock Out

35-39 inches

Best color & size when cooler

Soft lavender-blue pincushion flowers begin to appear in early summer and continue blooming non-stop into late fall

Promotes strong root development

Delphinium Grandiflorium Summer Cloud Colour:Blue Parentage: Sport of Double KnockScientific Name: Delphinium grandiflorum Common Name: Larkspur Hardiness Zone: 3a 8b Hardiness Degree: 40F ( 40. 0C) Blooming Season: Spring, Late Spring, Summer Plant Habit: Upright Characteristics: Attracts Hummingbirds, Low Maintenance Water: Medium Fertilize: Once a month Spacing: 12 16" (30 41cm) Height: 12" (30cm) Width: 10 12" (25 30cm) Exposure: Sun General Information: Features dainty flower clusters rather than traditional long, spiky stems.