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

Buddlejadavidii

Family
Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee)
Genus
Buddleja (BUD-lee-uh)
Species
davidii (duh-VID-ee-eye)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Deciduous
Height
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
Spacing
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 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
Lavender
Medium Purple
Bloom Time
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Shrubs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Grow outdoors year-round in hardiness zone
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Patent expired
Propagation Methods
From woody stem cuttings
From softwood cuttings
From semi-hardwood cuttings
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

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

Kissimmee, Florida

Saint Cloud, Florida

Trenton, Florida

Featured Videos

Gardener's Notes:

1
positive
2
neutrals
0
negative
Sort By:
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C
ROSLINDALE, MA | August 2016 | neutral

This is an older cultivar. The RHS withdrew its Award of Garden Merit after the 2008-2010 Buddleja trials.

This species is...Read More

A
Saint Cloud, FL | June 2007 | positive

I got 3 of these a few months ago and the plants looked quite tiny, they are bursting with blooms now and so pretty. They appear to reall...Read More

B
Lakemont, GA (Zone 8a) | March 2007 | neutral

Buddleia davidii 'Empire Blue' BUTTERFLY BUSH Dec (z5) (Fra,Bfly,Cut)
Fragrant trusses of rich violet-blue flowers with an orange ...Read More

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