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Buddleja, Butterfly Bush, Summer Lilac, Orange-eye Butterfly Bush 'Blue Horizon'

Buddlejadavidii

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Family
Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee)
Info
Genus
Buddleja (BUD-lee-uh)
Info
Species
davidii (duh-VID-ee-eye)
Info
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Deciduous
Height
4-6 ft. (1.2-1.8 m)
Spacing
4-6 ft. (1.2-1.8 m)
Hardiness
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
N/A
Bloom Color
Blue-Violet
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Shrubs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size

Unknown - Tell us

Other details
May be a noxious weed or invasive
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information

Unknown - Tell us

Propagation Methods
From woody stem cuttings
From softwood cuttings
From semi-hardwood cuttings
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional
View this plant in a garden
2 members have or want this plant for trade

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coriaceous
ROSLINDALE, MA | August 2016 | neutral

The RHS assessed this cultivar in 2010 and recommended it for the coveted Award of Garden Merit. "Nice blue and good tight habit. Distin...Read More

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