Larkspur, Candle Delphinium
Delphinium elatum 'Guardian Blue'

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Delphinium (del-FIN-ee-um) (Info)
Species: elatum (el-AH-tum) (Info)
Cultivar: Guardian Blue
Additional cultivar information:(Guardian series)

Category:

Perennials

Height:

36-48 in. (90-120 cm)

Spacing:

9-12 in. (22-30 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)

Sun Exposure:

Full Sun

Danger:

All parts of plant are poisonous if ingested

Bloom Color:

Medium Blue

Bloom Time:

Mid Spring

Late Spring/Early Summer

Foliage:

Herbaceous

Other details:

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

Average Water Needs; Water regularly; do not overwater

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:

Unknown - Tell us

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 has been said to grow in the following regions:

Fallbrook, California

San Leandro, California

San Mateo, California

Denver, Colorado

Lake City, Florida

Noblesville, Indiana

Rockwood, Michigan

Ocean Springs, Mississippi

Roswell, New Mexico

Santa Fe, New Mexico

Akron, Ohio

Mercer, Pennsylvania

Pittsburgh, Pennsylvania

Knoxville, Tennessee

Austin, Texas

Desoto, Texas

New Ulm, Texas

Cathan, Washington

Concrete, Washington

Grand Mound, Washington

Lakewood, Washington

show all

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Aug 31, 2009, the1pony from (Pony) Lakewood, WA (Zone 8a) wrote:

After the first bloom wrapped up I cut them way back, and they very quickly grew and bloomed again. These are definitely a new favorite for me.