Delphinium Species, Brown's Larkspur, Dunce Cap, Giant, Tall Larkspur, Mountain Larkspur

Delphiniumglaucum

Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus
Delphinium (del-FIN-ee-um)
Species
glaucum (GLAW-kum)
Synonym
Delphinastrum glaucum
Delphinium brownii
Delphinium canmorcnse
Delphinium elongatum
Delphinium ramosum
Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade
Foliage
Herbaceous
Height
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Spacing
24-36 in. (60-90 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)
Bloom Color
Blue-Violet
Bloom Time
Mid Summer
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Oak View, California

Schulter, Oklahoma

San Antonio, Texas

Magna, Utah

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Gardener's Notes:

1
positive
1
neutral
0
negative
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K
Delisle, SK (Zone 2b) | June 2014 | positive

The Larkspur grows at the base of Virginia Creeper in my yard. It does not get any direct sunlight since my fence runs East to West and i...Read More

W
Magna, UT (Zone 7a) | April 2011 | neutral

Self seeds prolifically. Seedlings very easy to pull out. It is very pretty however. Hummingbirds, butterflies and moths do visit this flower.

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