
Photos are representative and may not match your specific variety.
Delphiniums Pacific Giant Series
FlowerDelphinium elatum 'Pacific Giant'
- Full sun
- Zones 3–7
- 60 days to maturity
- Flowers
- 18" spacing
- High water
- Perennial
- pH 7–7.5
Overview
These towering cottage garden classics produce magnificent spikes of densely packed flowers in shades of blue, purple, pink, and white, reaching impressive heights that create stunning vertical drama. The Pacific Giant series is renowned for producing the tallest and most robust delphiniums, with flower spikes that can extend 3-4 feet in length. Though challenging to grow, their spectacular display rewards dedicated gardeners with one of the most breathtaking sights in the flower garden.
Planting
Start seeds indoors 10-12 weeks before last frost. Seeds need cold stratification. Transplant carefully as they dislike root disturbance.
Growing
Sun: full. Water: high. Soil pH: 7–7.5. Space plants 18" apart. Germination: 14-21 days.
Pests & diseases
Common pests: Aphids, spider mites, slugs, snails, delphinium leaf miner. Common diseases: Crown rot, bacterial black spot, powdery mildew, fusarium wilt.