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Dragon-claw Scholar tree

Styphnolobium japonicum (styf-noh-LOH-bee-um juh-PON-ih-kum PEN-du-lah)

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

Weeping Chinese pagoda is a smaller and weeping form of Styphnolobium japonicum , a slow growing, flowering, small tree in the Fabaceae (bean) family. The S. japonicum species will typically reach a height of 75 feet at maturity, but the 'Pendula' cultivar will reach only a third of that height. In its native environment, it can be found in open country in western China but, despite its species name japonicum , not in Japan. Although not native to Japan, the species name reflects the early use of the tree in Japan around Buddhist temples. Its weeping form is graceful and the fragrant flowers make it an excellent specimen for a small space or Asian garden or in a space where it can be admired. Plant in the full sun to partial shade in rich, moist well-drained sandy loams in full sun to part shade. To maximize flowering, it is best to plant in full sun. This tree will tolerate city pollutants and urban conditions and, once established, heat and some drought. Styphnolobium japonicum is slow-growing, and new saplings may take as long as 10 years to flower. The 'Pendula' cultivar rarely flowers or produces fruits. As the tree ages, the branches droop and can require pruning for clearance under the canopy. It typically grows with multiple trunks, but can be trained to become a single trunked tree. It has a resistance to damage from storms. Insects, Diseases, and Other Plant Problems: No serious insect or disease problems. Potato leafhoppers can damage young stems, causing breakage Twig blight, verticillium wilt, canker, powdery mildew, and rust may occur. More information on Styphnolobium japonicum .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 74 attributes.

How it fits the guild

Guild layer 2 - Understory (15-40 ft) Optimal soil pH Alkaline (>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.

Often confused with Styphnolobium affine
Fills a similar niche Cercis canadensis subsp. texensis 'Traveller' Ptelea trifoliata Ulmus alata

Full plant profile

Growing Conditions
Plant type
Poisonous; Tree
Life cycle
Woody
USDA zones
4a, 4b, 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
High Organic Matter; Loam (Silt)
Soil pH
Alkaline (>8.0)
Soil drainage
Good Drainage | Moist
Available space
24-60 feet
NC region
Mountains; Piedmont
Mature size
Height: 15 ft. 0 in. - 25 ft. 0 in. | Width: 15 ft. 0 in. - 25 ft. 0 in.
Growth rate
Slow
Maintenance
Low
Canopy layer
2 - Understory (15-40 ft)
Form & Appearance
Habit / form
Broad; Cascading; Rounded; Weeping
Texture
Fine
Foliage
Deciduous
Leaf color
Green
Leaf type
Compound (Pinnately , Bipinnately, Palmately)
Leaf arrangement
Alternate
Leaf shape
Ovate
Leaf margin
Entire
Leaf feel
Glossy
Leaf size
> 6 inches long
Hairs present
No
Leaf detail
Pinnately compound leaves to 10 inches long with 7 to 10 oval glossy dark green leaflets. Remains attractive throughout the growing season. Leaves retain green color late into fall, resulting in no fall color or at best an undistinguished greenish yellow. Good yellow fall color.
Fall color
Gold/Yellow
Flower color
Gold/Yellow; White
Flower value
Fragrant; Showy
Flower form
Panicle
Flower shape
Lipped
Flower size
< 1 inch
Flower detail
Flower production is rare.
Bloom time
Summer
Fruit color
Brown/Copper; Green
Fruit type
Legume
Fruit value
Showy
Fruit size
> 3 inches long, > 3 inches wide
Fruit detail
Bean pods with 1 to 6 seeds that have constrictions between making it knobby 3 to 8 inches long that start off green and mature to brown in fall and persist into winter.
Bark color
Dark Gray
Stem color
Gray/Silver; Green
Stem detail
Its young green stems stay green for several years and then turn dark gray as they age.
Wildlife & Ecology
Native status
Non-native
Origin
Western China
Distribution
Japan, Europe, North America, South Africa
Wildlife value
Butterflies are attracted to the flowers.
Attracts
Butterflies
Play value
Attracts Pollinators; Buffer; Screening; Textural
Food & Medicine
Harvest time
Fall; Winter
Fruit type
Legume

Edibility

Contains cytosine, which is similar to nicotine.

Uses (ethnobotany)

The flowers and leaves are sometimes used in teas.

Landscape Use
Landscape location
Lawn; Patio; Small Space
Landscape theme
Asian Garden; Drought Tolerant Garden; Winter Garden
Design feature
Accent; Screen/Privacy; Shade Tree; Small Tree; Specimen; Street Tree
Garden tags
#weeping #air pollution tolerant #slow growing #drought tolerant #specimen #low maintenance #small tree #pendulous #heat tolerant #deciduous #deciduous tree #poor drainage tolerant #cascading #broadleaf #butterfly friendly #salt tolerant #winter interest #winter garden #poisonous #patio
Problems & Resistance
Insect problems
Potato Leafhopper on Ornamental Plants
Problems
Poisonous to Humans
Resistant to
Drought; Heat; Pollution; Salt; Storm damage; Urban Conditions
Propagation
Grafting
Poison severity
Low
Poison parts
Seeds
Poison symptoms
The plant contains cytosine, which resembles nicotine in its toxicity.
Toxic principle
cytosine
Contact dermatitis
No
Toxicity summary
Low severity poison; parts: Seeds

Planted at Hunnicutt

Nobody’s planted this one yet.