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Leatherbark

Dirca palustris (DIR-kah pahl-US-triss)

Family: Thymelaeaceae Native Shrub (3-15 ft)

Leatherwood is a native deciduous shrub found in forested or natural areas in rich woods. It prefers moist, humus-rich sandy or clay soils in shade to part shade. It forms a dense, rounded form with pale green, oval-shaped leaves and blooms in early spring with small yellow bell-shaped flowers followed by drupes. It is fairly rare and not used in the landscape often as it can be hard to find. In nature, it can be found growing in very rich forests, on slopes or bottomlands, and is limited to calcareous or mafic rocks such as limestone, calcareous siltstone, calcareous shale, gabbro, or amphibolite. It can be found in Ashe County NC ascending to 1500 meters elevation. Foliage turns yellow in fall. Long-lived and slow-growing. Pliable twigs used as cordage by Native Americans. Fruits and roots have slight toxicity; some people's skin reacts to exposure to the bark.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 64 attributes.

How it fits the guild

Guild layer 3 - Shrub (3-15 ft) Optimal soil pH Acid (<6.0); Alkaline (>8.0); 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.

Full plant profile

Growing Conditions
Plant type
Native Plant; Perennial; Poisonous; Shrub
Life cycle
Woody
USDA zones
3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Dappled Sunlight (Shade through upper canopy all day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; High Organic Matter; Sand
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist | Occasionally Wet
Available space
6-feet-12 feet
NC region
Mountains; Piedmont
Mature size
Height: 4 ft. 0 in. - 6 ft. 0 in. | Width: 4 ft. 0 in. - 6 ft. 0 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
3 - Shrub (3-15 ft)
Form & Appearance
Habit / form
Erect; Multi-stemmed; Spreading
Foliage
Deciduous
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Elliptical; Obovate
Leaf margin
Entire
Leaf feel
Smooth
Leaf size
3-6 inches long, 1-3 inches wide
Hairs present
No
Leaf detail
3-4 inch long leaves are yellow-green when new and mature to medium green in summer. Fall color is bright yellow.
Fall color
Gold/Yellow
Flower color
Gold/Yellow
Flower form
Spike
Flower shape
Bell
Flower size
< 1 inch
Flower detail
Pale yellow flowers have long yellow stamens, are bell-shaped, and up to 1/3 inch long. They are borne in axillary clusters in the early spring. In North Carolina, flowers are available from March to April.
Bloom time
Spring
Fruit color
Gold/Yellow; Green; Red/Burgundy
Fruit type
Drupe
Fruit detail
Green to red drupe. In North Carolina, the yellow-green fruits are available from June to July.
Bark color
Dark Gray
Bark detail
wrinkled gray bark, fibrous bark
Stem color
Brown/Copper
Stem detail
Brown jointed twigs with ring-like joints are very flexible
Wildlife & Ecology
Native status
Native
Origin
East Canada to North Central & Eastern U.S.A
Distribution
AL , AR , CT , DC , DE , FL , GA , IA , IL , IN , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NH , NJ , NY , OH , OK , PA , SC , TN , VA , VT , WI , WV Canada: NB , NS , ON
Wildlife value
Birds and small mammals enjoy the fruits as a food source.
Attracts
Bees; Small Mammals; Songbirds
Food & Medicine
Harvest time
Spring; Summer
Fruit type
Drupe

Uses (ethnobotany)

Native Americans used the twigs and bark for bowstrings, baskets, fishing line and rope

Landscape Use
Landscape location
Naturalized Area; Pond; Woodland
Landscape theme
Native Garden; Rain Garden; Shade Garden
Garden tags
#deciduous #yellow flowers #native shrub #poisonous #NC native #bird friendly #woody #green fruits #deciduous shrub #food source herbage #piedmont #mammals #spreading #Piedmont Mountains FAC #food source soft mast fruit #partial shade tolerant #small and large mammals #shade garden #flowers early spring #slow growing #mountains #fall color yellow #fruits summer #drupes #food source summer #spring interest #well-drained soil #small mammals #summer interest #shrub #native garden #alkaline soils tolerant #shade flowers #shade shrub #wet soils tolerant #moist soil #low maintenance #yellow fruits #Coastal FACU #red fruits #spring flowers #multistemmed #Audubon #heavy shade tolerant #upright form #delicate #coastal plant #fall interest #flowers mid-spring #showy fruits #long lived #wildlife friendly #woodland #contact dermatitis
Problems & Resistance
Problems
Contact Dermatitis; Poisonous to Humans
Resistant to
Wet Soil
Poison severity
Low
Poison parts
Bark; Flowers; Fruits; Leaves; Roots; Sap/Juice; Seeds; Stems
Poison symptoms
Vomiting, diarrhea if eaten. Contact with bark may cause skin irritation with blisters lasting for a few minutes.
Toxic principle
Resins
Contact dermatitis
Yes
Toxicity summary
Low severity poison; parts: Bark; Flowers; Fruits; Leaves; Roots; Sap/Juice; Seeds; Stems; contact dermatitis

Planted at Hunnicutt

Nobody’s planted this one yet.