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Buddleja davidii 'Harlequin'

Buddleja davidii (bud-LAY-yah dah-VID-ee-eye)

Family: Scrophulariaceae Unknown Shrub (3-15 ft)

Buddleja davidii 'Harlequin' is a beautiful, medium to large-sized, variegated flowering shrub that is a sport of Buddleja davidii 'Royal Red.' It was first introduced in 1964. It grows rapidly and may reach 4 to 6 feet tall or taller, and its leaves are lance-shaped with creamy white margins. Its flowers are small, fragrant, and reddish-purple, arranged in a dense, cylinder-like panicle. It attracts butterflies and bees. The 'Harlequin' butterfly bush thrives best in moist, well-drained soils in full to partial sun. This plant is not tolerant of wet, soggy, or poorly drained soils. It has average water requirements and is drought-tolerant once established. It is tolerant of most soil types, but clay soil should be amended with compost. It dies back to the ground in colder regions, and dead branches will need to be pruned out when new growth is evident in the spring. This shrub blooms on new wood; therefore, it is safe to prune in the early spring. Prune about 1 foot from the ground to help maintain the desired shape and to encourage larger flower production. As with any sport or spontaneous mutation, the plant may revert to the original green foliage if stressed. Care should be taken to remove unvariegated branches to maintain the desired appearance. Reportedly, this shrub has become less popular recently due to its susceptibility to spider mites and its tendency to revert to green foliage. It is still widely available. You can also select other variegated forms such as 'Notbud,' 'Thia,' 'Watflor,' and 'White Harlequin.' Insects, Diseases, and Other Plant Problems: No serious insect or disease problems. It is susceptible to aphids, capsid bugs, caterpillars, earwigs, figwort weevils, and spider mites. Monitor for honey fungus, leaf spot, and viruses. More information on Buddleja davidii .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 55 attributes.

How it fits the guild

Guild layer 3 - Shrub (3-15 ft) Optimal soil pH Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Fills a similar niche Buddleja alternifolia Buddleja x weyeriana Syringa persica
Similar, less problematic Buddleja 'Miss Ruby'

Full plant profile

Growing Conditions
Plant type
Perennial; Shrub
Life cycle
Perennial; Woody
USDA zones
5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; High Organic Matter; Loam (Silt); Sand
Soil pH
Neutral (6.0-8.0)
Soil drainage
Good Drainage | Occasionally Dry
Available space
3 feet-6 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 4 ft. 0 in. - 6 ft. 0 in. | Width: 3 ft. 0 in. - 6 ft. 0 in.
Growth rate
Rapid
Maintenance
Low
Canopy layer
3 - Shrub (3-15 ft)
Form & Appearance
Habit / form
Arching; Erect; Spreading
Foliage
Deciduous
Leaf color
Cream/Tan; Green; Variegated
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Lanceolate
Leaf feel
Soft
Leaf size
3-6 inches long, 1-3 inches wide
Hairs present
Yes
Leaf detail
This plant has opposite, simple, green leaves with irregular, creamy-white margins. The leaves are long and pointed, soft green above and with white hairs on the underside.
Fall color
Insignificant
Flower color
Purple/Lavender; Red/Burgundy
Flower value
Fragrant; Good Cut; Long Bloom Season; Showy
Flower form
Panicle
Flower shape
Tubular
Flower size
< 1 inch
Flower detail
'Harlequin' flowers are reddish-purple, tubular-shaped, and fragrant. The flowers are arranged in a cylinder shaped panicle, measuring 6 to 8 inches long. Blooming occurs from June to August.
Bloom time
Summer
Fruit color
Brown/Copper
Fruit type
Capsule
Fruit size
< 1 inch long, < 1 inch wide
Fruit detail
The fruit is a capsule. This plant seeds prolifically. Deadhead the spent blooms to reduce seed production.
Wildlife & Ecology
Native status
Unknown
Wildlife value
It attracts butterflies, hummingbirds, and other pollinators.
Attracts
Bees; Butterflies; Pollinators
Play value
Attractive Flowers; Attracts Pollinators; Colorful; Easy to Grow; Fragrance
Food & Medicine
Harvest time
Fall
Fruit type
Capsule
Landscape Use
Landscape location
Meadow; Naturalized Area; Patio; Woodland
Landscape theme
Butterfly Garden; Cottage Garden; Drought Tolerant Garden; Pollinator Garden
Design feature
Accent; Border; Foundation Planting; Hedge; Security
Garden tags
#deciduous #nectar plant #purple #fast growing #red flowers #summer flowers #full sun tolerant #shrub #purple flowers #deer resistant #fragrant flowers #heat tolerant #butterfly friendly #border back #upright form #spreading #arching #humidity tolerant #rabbit resistant #air pollution tolerant #partial shade tolerant #hedge #perennial #variegated #wildlife friendly
Problems & Resistance
Resistant to
Deer; Drought; Heat; Pollution; Rabbits

Planted at Hunnicutt

Nobody’s planted this one yet.