Delphinium Pacific
Delphinium × elatum 'Pacific Giants'
flowerTall, stately perennials renowned for their dramatic spires of large, semi-double flowers in shades of blue, purple, pink, and white. These cottage garden classics can reach 4–6 feet tall and bloom mid to late summer. They require staking and prefer cool climates with well-draining soil.
Common Problems
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Care Guide
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Light
Full sun (6–8 hours daily); partial shade in hot climates
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Water
Keep soil consistently moist during growing season; water at base to prevent fungal issues. Reduce watering in winter dormancy.
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Soil
Rich, well-draining loam with pH 6.5–7.5. Amend with compost or aged manure to improve fertility and drainage.
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Fertiliser
Apply balanced fertilizer (10-10-10) monthly during growing season, or use slow-release granules at planting. Reduce nitrogen to prevent excessive leaf growth.
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Temperature
Cool-season perennial; thrives in 60–70 °F. Struggles in heat above 85 °F; provide afternoon shade in warm zones.
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Humidity
Moderate humidity; ensure good air circulation to prevent fungal disease. Avoid overhead watering.
Toxicity
dangerousToxic to CatsdangerousToxic to DogsdangerousToxic to Children
All parts contain toxic alkaloids; ingestion causes burning sensation, salivation, diarrhea, and potential cardiac effects.
Common Diseases
Common Pests
Seasonal Care
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Resume regular watering and feeding as growth picks up.
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Peak growing season. Water and feed regularly.
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Reduce watering as growth slows. Stop heavy feeding.
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Minimal watering and feeding. Protect from frost if needed.