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Harlequin Glorybower

Clerodendrum trichotomum (kle-ro-DEN-drum tri-ko-TO-mum)

Family: Lamiaceae Non-native Understory (15-40 ft)

Harlequin glorybower is an open, unkempt, multi-stemmed, flowering deciduous shrub in the mint family. It is a large plant, reaching up to 20 feet high and 10 feet wide at maturity. This plant has fragrant white flowers on 6 to 9 inch racemes in summer. When the leaves are crushed they give off a peanut butter fragrance, hence one of the common names. Flowers are followed by bright blue drupes. Plant in full sun to light shade in organically rich, well-drained soil. Mulch the roots heavily in the fall to protect them through the winter, otherwise, they may not survive. Use as a hedge for privacy screening, in a shrub border or along the margin of a woodland garden. The plant is sometimes classified as a tree, but effort is required to train the plant to grow as a tree. Insects, Diseases, and Other Plant Problems: No serious problems. Can be weedy. VIDEO created by Ryan Contreras for “Landscape Plant Materials I: Deciduous Hardwoods and Conifers or Landscape Plant Materials II: Spring Flowering Trees and Shrubs” a plant identification course offered by the Department of Horticulture at Oregon State University

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 51 attributes.

How it fits the guild

Guild layer 2 - Understory (15-40 ft)
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.

Full plant profile

Growing Conditions
Plant type
Shrub; Tree
Life cycle
Woody
USDA zones
7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b
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
High Organic Matter
Soil drainage
Good Drainage
Available space
12-24 feet
Mature size
Height: 10 ft. 0 in. - 20 ft. 0 in. | Width: 10 ft. 0 in. - 20 ft. 0 in.
Maintenance
Medium
Canopy layer
2 - Understory (15-40 ft)
Form & Appearance
Habit / form
Irregular; Open
Texture
Coarse
Foliage
Deciduous
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Elliptical; Ovate
Leaf margin
Entire; Serrate
Leaf value
Fragrant
Leaf size
> 6 inches long
Hairs present
Yes
Leaf detail
Lustrous, dark green leaves; 4"-8" long; simple, ovate to elliptic; entire or sparsely toothed. Crushed leaves smell like peanut butter.
Flower color
Blue; White
Flower value
Fragrant; Showy
Flower form
Cyme; Raceme
Flower shape
Tubular
Flower detail
Late summer to fall blooming tubular white showy, fragrant flowers appear in long-peduncled cymes 6"-9" wide.
Bloom time
Fall; Summer
Fruit color
Blue; Red/Burgundy
Fruit type
Drupe
Fruit value
Showy
Fruit detail
Bright blue fruits with red fleshy caylx. Two plants are required to produce fruit.
Wildlife & Ecology
Native status
Non-native
Origin
Eastern Asia
Distribution
Philippines, introduced into Italy, Britain, Alabama and Arkansas.
Play value
Fragrance
Food & Medicine
Fruit type
Drupe
Landscape Use
Landscape location
Lawn; Woodland
Landscape theme
Asian Garden; Garden for the Blind
Design feature
Border; Flowering Tree; Hedge; Small Tree
Garden tags
#deciduous #delicate #showstopper #vibrant #shrub #victorian garden #showy flowers #airy #deciduous shrub #fragrant leaves #fall flowers #summer flowers #fall interest #flowering tree #small tree #flowers late summer #flowers early fall #white flowers #landscape plant sleuths course #hedge #weedy #aggressive
Problems & Resistance
Problems
Weedy
Resistant to
Urban Conditions

Planted at Hunnicutt

Nobody’s planted this one yet.