Delphinium, Candle Delphinium, Larkspur 'Pacific Giant'

Delphinium

Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus
Delphinium (del-FIN-ee-um)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
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)
Danger
All parts of plant are poisonous if ingested
Bloom Color
Pink
Blue-Violet
Lavender
White/Near White
Bloom Time
Mid Summer
Mid Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
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
Regional

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

Anchorage, Alaska(2 reports)

Denver, Colorado

Swansea, Massachusetts

Chesterfield, Missouri

Berlin, New Hampshire

Cicero, New York

Portland, Oregon

Lewisburg, Pennsylvania

New Milford, Pennsylvania

Salt Lake City, Utah

Bothell, Washington

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Featured Videos

Gardener's Notes:

2
positives
0
neutral
0
negative
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C
C
Lewisburg, PA (Zone 6b) | June 2011 | positive

Sown from seed, it's been the only delphinium of dozens that has survived the climate and pests of my zone 6b garden. After I started lim...Read More

F
Portland, OR | November 2008 | positive

In our climate here in the Pacific Northwest, this is one of the most amazing plants anyone can have in his or her garden. The blooms gro...Read More

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