Delphinium Species, Clark Valley Larkspur, Towering Delphinium, Towering Larkspur
Delphiniumgeraniifolium

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus: Delphinium (del-FIN-ee-um)
Species: geraniifolium (jer-an-ee-ih-FOH-lee-um)

Synonym:Delphinium amplibracteatum

Synonym:Delphinium tenuisectum subsp. amplibracteatum

Category
Herbs
Perennials

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

Sun Exposure
Sun to Partial Shade

Foliage
Herbaceous
Smooth

Foliage Color

Height
24-36 in. (60-90 cm)

Spacing
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

Hardiness

Where to Grow

Danger
All parts of plant are poisonous if ingested

Bloom Color
Medium Blue
Blue-Violet

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Mid Summer

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
Non-patented

Propagation Methods
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting
Collect seedhead/pod when flowers fade; allow to dry
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored