Delphinium Species, Tall Mountain Larkspur, Duncecap Larkspur
Delphiniumoccidentale

Synonym:Delphinastrum occidentale

Synonym:Delphinium abietorum

Synonym:Delphinium cucullatum

Synonym:Delphinium multiflorum

Synonym:Delphinium × occidentale

Category
Perennials

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Full Sun

Foliage
Herbaceous

Foliage Color

Height
36-48 in. (90-120 cm)

Spacing
18-24 in. (45-60 cm)

Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Where to Grow

Danger
All parts of plant are poisonous if ingested

Bloom Color
Pink
Blue-Violet
Lavender
White/Near White

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer
Mid Fall

Other details

Soil pH requirements

Patent Information

Propagation Methods
By dividing the rootball
From herbaceous stem cuttings
Allow cut surface to callous over before planting
By air layering

Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Seed does not store well; sow as soon as possible