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Delphinium Species, Nuttall's Larkspur, Low Larkspur, Two-lobe, Upland Larkspur, Two-toned Larkspur

Delphiniumnuttallianum

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Delphinium nuttallianum by kennedyh
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Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Info
Genus
Delphinium (del-FIN-ee-um)
Info
Species
nuttallianum (nut-al-ee-AH-num)
Info
Synonym
Delphinastrum nuttallianum
Delphinium dumetorum
Delphinium leonardii
Delphinium nelsonii
Delphinium pinetorum
Sun Exposure
Partial to Full Shade
Foliage
Herbaceous
Height
18-24 in. (45-60 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
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)
Danger
Parts of plant are poisonous if ingested
Bloom Color
Medium Blue
Lavender
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

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

Unknown - Tell us

Other details

Unknown - Tell us

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
By dividing the rootball
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 seedheads to dry on plants; remove and collect seeds
Regional

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

Sedona, Arizona

Golden, Colorado

Laporte, Colorado

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hillfarm
Quesnel, BC (Zone 4a) | November 2010 | positive

Very early blooming wildflower of dry hillsides in the interior Cariboo region of British Columbia. Vibrant cobalt blue; like nothing els...Read More

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