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Week 8 – February 22, 2024

Plant Information

Delphinium Diamonds Blue

  • Delphinium Diamonds Blue - Bloom
Growing Information:
Culture Guidelines
Marketing Information:
Bench Card
Download a Bench Card
Plant Details:

Scientific Name: Delphinium grandiflorum

Common Name: Larkspur

Hardiness Zone: 4a - 9b

Hardiness Degree: -30°F (-34.4°C)

Blooming Season: Early Spring, Spring

Plant Habit: Upright

Characteristics: Attracts Bees, Attracts Butterflies, Attracts Hummingbirds, Low Maintenance, Frost Tolerant

Water: Light

Fertilize: Once a month

Spacing: 30 - 35" (76 - 89cm)

Height: 16 - 24" (41 - 61cm)

Width: 10 - 12" (25 - 30cm)

Exposure: Sun

General Information: Diamonds Blue sparkles in the garden with cerulean blue flowers that “face up.”

Grower Information:

Plug crop time: 6 to 7 weeks
Transplant to finish: 10 to 12 weeks

  • The first F1 spurless Delphinium from seed, Diamonds Blue eliminates the need for tissue culture inputs and is supplied with up to 25% higher germination than O.P. types for more efficient young plant production.