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Black Knight Butterfly Bush
A long time favorite of ours, and the hummingbirds and butterflies, Black Knight is a tall-growing Buddleia that produces elongated clusters of fragrant, deep purple (almost black) flowers from June all the way to frost. Get all details below!

Black Knight Butterfly Bush

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SIZE: 3 GALLON POT
Quantity Price Each
1 $49.97
2+ $47.82

'Black Knight' Butterfly Bush 
Buddleja davidii 'Black Knight'

USDA Plant Hardiness Zones: 5a-9b  Find Your Zone

Note:  For our customers who live and garden north of USDA Plant Hardiness Zone 5a, where this Butterfly Bushe variety is not winter hardy, you'll be happy to know it can be grown in containers that can be brought indoors during winter and placed back outside when temperatures warm up in spring.



Special Attributes

A long time favorite of ours, and the hummingbirds and butterflies, Black Knight is a tall-growing Buddleia that produces elongated clusters of fragrant, deep purple (almost black) flowers from June all the way to frost. The flower clusters appear at the ends of long and arching branches on plants that grow 8 to 10 feet tall by 4 to 5 feet wide. The willow-like, grayish green leaves are a wonderful contrast and backdrop for the flowers. Great for use in perennial gardens and and outdoor living spaces where the butterflies and hummingbirds that flock to the plant can be viewed as they feast on the honey-scented flowers.




Landscape & Garden Uses

Growing 8 to 10 foot tall and 4 to 5 feet wide, the Black Knight Butterfly Bush is ideal for use as a specimen, in groupings or as a colorful hedge or background in landscape and perennial borders. A fine addition to butterfly and hummingbird gardens, purple theme gardens, Xeriscape gardens (low water needs and cottage gardens.

Suggested Spacing:  3 feet apart for solid hedges or mass plantings;  7' or more apart for space between plants




Cultural Preferences

Knight Butterfly Bush thrives in full to mostly sun and isn't too picky about soil type, provided the soil is well-drained. Plants are quite drought tolerant when established and deer don't like them! Very easy to grow!




Helpful Articles

Click on the link below to find advice from our experts on how to plant, fertilize, prune and water Butterfly Bushes...





Plant Details

USDA Plant Hardiness Zones: 5a-9b  Find Your Zone
Plant Type:  Perennial Shrub
Height at Maturity: 8-10'
Width at Maturity: 4-6'
Spacing:  4' for solid hedges, 10' for space between plants
Growth Habit / Form:  Arching, Bushy, Upright, Vase/Fountain Shape
Growth Rate:  Fast to Very Fast
Flower Color:  Deep Purple
Flower Size: 8-10" long clusters
Flowering Period:  June to Frost!
Flower Type:  Spike
Fragrant Flowers:  Yes
Foliage Color:  Grey-Green
Fragrant Foliage:  No
Berries:  No
Berry Color:  No
Sun Needs:  Full to Mostly Sun
Water Needs:  Average, low when established
Soil Type:  Clay (Amedned), Loam, Sand, Silt 
Soil Moisture / Drainage:  Well-drained moist to dry
Soil pH:  5.5 - 8.5 (Acid to Moderately Alkaline)
Maintenance / Care:  Low to Average
Attracts:  Visual Attention, Birds, Butterflies, Hummingbirds
Resistances:  Deer, Disease, Drought, Dry Soil, Heat, Insect, Rabbit



Plant Long & Prosper!

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