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Larkspur - Key Growing Information
SOWING: Direct seed (recommended) - ¼" deep (darkness is required for germination) in early spring for summer bloom or in fall for bloom the following year. Seeds do not germinate well when soil temperatures are above 55°F (13°C). Transplant - Sow into 72-cell plug flats, or preferred seedling container, 5-7 weeks before planting out. If growing transplants, grow at 55°F (13°C) until ready to plant outside. Larkspur performs best where summers are cool.
LIGHT PREFERENCE: Sun.
PLANT HEIGHT: 36-48". Support is recommended.
PLANT SPACING: 4-6".
HARDINESS ZONES: Annual.
STEM LENGTH: 12-40".
VASE LIFE: 5-7 days.
HARVEST: Fresh - 2-3 basal flowers open on up to 1/3 of stem. Dried - flowers on stem are open but before petals drop.
SOIL REQUIREMENTS: Rich, well-drained, slightly alkaline soil.
USES: Excellent cut or dried flower. Good for back of beds.