Plant types and subtypes: Perennials
Light Requirements: sun, part-sun
Water Use: medium
Soil Moisture: moist, wet
Soil Description: neutral, rich, average
Height: 2'-4'
Bloom Time: July, August, September
Bloom Color: purple, lavender, blue
Leaf Color: green
Hardiness Zone: 6, 7
Additional Tags: attracts butterflies, cottage garden plant
Pricing & Availability
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Description
Delphinium exaltatum
Also known as:tall larkspur
,Description
Delphinium exaltatum produces beautiful blue to lavender, 1" spurred flowers. They are arranged on a tall, loose, narrow, terminal spike. Leaves are cleft into 3 to 5 lobes.
Cultivation
Tall larkspur likes rocky limestone soil in the wild, but seems to do fine in average garden conditions, provided it is in a well drained location. It prefers light shade where summers are hot. Bloom times are from July through September. Zones 6-7
Propagation
Collect seeds from dry pod before they are expelled. Plants may also be divided.
Additional Notes
Delphinium exaltatum may be susceptible to powdery mildew and should be positioned in an area with good air circulation to minimize the risk.
Native Range & Classification
Recorded County Distribution: USDA data
Native Range:
AL, KY, MD, ME, MO, NC, OH, PA, TX, VA, WV
USDA Endangered Status:
- Endangered: MD, NC, PA, TN
- Special Concern: NC
Classification
| Kingdom | Plantae | Plants | |
| Subkingdom | Tracheobionta | Vascular plants | |
| Superdivision | Spermatophyta | Seed plants | |
| Division | Magnoliophyta | Flowering plants | |
| Class | Magnoliopsida | Dicotyledons | |
| Subclass | Magnoliidae | ||
| Order | Ranunculales | ||
| Family | Ranunculaceae | Buttercup family | |
| Genus | Delphinium | larkspur | |
| Species | Delphinium exaltatum | tall larkspur |