Full sun (minimum 6-8 hours). In hotter southern zones (zone 7+), provide afternoon shade to prevent scorching. Soil: Deep, fertile, humus-rich, and well-draining . They prefer a neutral to slightly alkaline pH (6.5–7.5). If you have clay soil, plant them in raised beds. When to Plant: Plant nursery-grown specimens in spring after the last frost, or in early fall (6 weeks before the first hard freeze).
The delphinium is not for the neglectful gardener. It requires staking, feeding, watering, and vigilant pest control. It will break your heart one year and take your breath away the next. But when that June sun hits a perfect 6-foot spire of electric blue—so bright it seems to glow—you will understand why gardeners have been trying (and failing) to spell delphiniue for centuries. delphiniue
Delphiniums crave (at least 6 to 8 hours a day). They prefer "cool feet," meaning they like moist, rich, well-draining soil. Amending your garden bed with plenty of organic compost or aged manure is highly recommended before planting. 2. Feeding and Watering Full sun (minimum 6-8 hours)
The Collection Book