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| Identification |
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Genus
Buddleja
Species
davidii
Variety
Cultivar
Empire Blue
Common names
butterflybush
summer lilac
Family
BUDDLEJACEAE
Specimen number
S11169
Data source
CrscntBlm;HtZn p86
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| Life cycle |
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Life form
Terrestrial
Life cycle
Woody perennial
Life span
5 - 20 years
Annual cycle
Depends on climate
Stature
Shrub
Growth form
Various
Growth habit
Not applicable
Overall height
6' - 20'
Overall spread
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| Climate |
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Sunshine
Full sun
Water
Well drained
Optimal soil texture
Fertile
Acceptable soil pH
Neutral
USDA hardiness
USDA zones 05a-09b
AHS heat zones
Heat zones 10-04
Sunset climate zones
Not classified
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| Garden |
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Suitable for gardens
yes
Nursery
Don's at Tuolumne
Compost
no
Size at acquisition
4 inch pot
Garden location
Herbaceous garden
Garden notes
Buddleja davidii 'Empire Blue' is a butterfly attractor. Summer lilac (also known as butterfly bush) can survive cold winters where the average annual low is -20� Fahrenheit. This plant needs summer days with high heat. The optimal soil texture for this species is one that is fertile. This plant does best in full sun. It usually does best in well drained soils.
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| Special qualities |
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Tolerates drought
no
Tolerates high humidity
no
Tolerates seaside conditions
no
Insect resistant
no
Disease resistant
no
Deer resistant
no
Best uses
Symbiosis
Attracts butterflies
yes
Attracts hummingbirds
no
Autumn foliage
no
Colorful berries
no
Desirable qualities
Other interest
Other interest color
Other interest period
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| Adverse factors |
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Common pests
Poisonous parts
Poisonous indications
Internal poison
no
Dermatologic poison
no
Livestock poison
no
Mechanical injury
no
Hay fever pollen
Hay fever season
Adverse qualities
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| Herbal medicine |
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Medicinal properties
Medicinal parts
Has medicinal uses
no
Do not self-administer
no
Do no use if pregnant
no
Legally restricted
no
Toxicity precautions
Medicinal notes
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| Traditional uses |
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Parts used
Traditional uses
Contemporary uses
Fragrance
fragrant flowers
Fragrance parts
Flowers
Fragrance intensity
Fragrance category
Dye parts
Dye color
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| Cultivation |
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Propagule
Various
Pollination method
Planting style
Crop spacing
Row spacing
Cold frame
Planting period
Harvesting period
Frost tolerance
Heat requirement
Fertilizer
Typical
Time to harvest
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| Nutrition |
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Is edible
no
Culinary uses
Nutritional value
Edible parts
Description of edible parts
Flavor / texture
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| Horticulture |
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Horticulture notes
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| Herbarium |
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Tag needs printing
no
Collection notes
Buddleja davidii 'Empire Blue' is a woody perennial. Flowers: Summer lilac (locally known in some parts as butterfly bush) has lilac like flower clusters. The flowers are usually a violet color.
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