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Black Birch

Betula lenta (BET-yoo-luh LEN-ta)

Family: Betulaceae Native Canopy (>40 ft)

Betula is Latin for birch and describes a genus of about 60 species of deciduous trees and shrubs found in many gardens and landscapes throughout the northern hemisphere. Betula lenta , or Sweet Birch, is a deciduous, pyramidal shaped tree, maturing into a more rounded shape that may grow 60 to 70 feet tall. Native to eastern North America, it is commonly found in forests of both low and high elevation as far south as the mountains of Georgia, but, except for a few cool spots, it is rare in the Piedmont of North Carolina. It grows primarily on the mountains of the western part of the state. Foliage is a reliable golden yellow and among the best of the birches. The wintergreen produced from this plant is identical to wintergreen produced by the wintergreen plant. Sweet Birches are best grown in moist, acidic, sandy, or rocky, well-drained loams in full sun to part shade and are often found in woodlands, preferring north-facing slopes and moist soils. It is also found on rocky soils; however, it is sensitive to compacted soil. The best foliage color occurs in full sun. Keep the tree consistently moist and consider using soaker hoses and bark mulches to keep the root zones cool and moist. The inner bark gives off a wintergreen scent. It needs little pruning, but if necessary, you can prune during the dormant season. Do not prune in winter or spring when the sap is running because it will bleed. Birches are considered a "pioneer" species and, thus, tends to grow quickly when young. Diseases, Insects, and Other Plant Problems: Birches can become stressed by summer heat and humidity. Aphids, canker, leaf miner and birch skeletonizer may occur. Watch for leaf spot problems.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 67 attributes.

How it fits the guild

Guild layer 1 - Canopy (>40 ft) Optimal soil pH Acid (<6.0); 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.

Fills a similar niche Quercus nigra Tilia americana Ulmus alata

Full plant profile

Growing Conditions
Plant type
Native Plant; Tree
Life cycle
Perennial; Woody
USDA zones
3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
Light
Deep shade (Less than 2 hours to no direct sunlight) | 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; Sand; Shallow Rocky
Soil pH
Acid (<6.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist | Occasionally Dry
Available space
more than 60 feet
NC region
Mountains
Mature size
Height: 60 ft. 0 in. - 70 ft. 0 in. | Width: 35 ft. 0 in. - 45 ft. 0 in.
Growth rate
Rapid
Maintenance
Medium
Canopy layer
1 - Canopy (>40 ft)
Form & Appearance
Habit / form
Dense; Pyramidal; Rounded; Spreading
Texture
Medium
Foliage
Deciduous
Leaf color
Gold/Yellow; Green
Leaf type
Simple
Leaf arrangement
Alternate
Leaf shape
Oblong; Ovate
Leaf margin
Serrate
Leaf feel
Smooth
Leaf value
Showy
Leaf size
3-6 inches long, 1-3 inches wide
Hairs present
No
Leaf detail
The leaves of the Sweet Birch are 2.5" to 6", broad, ovate with cordate base, single-toothed margins, alternate and simple. Leaves turn a golden-yellow color in the fall.
Fall color
Gold/Yellow
Flower color
Gold/Yellow; Green; Red/Burgundy
Flower form
Catkin
Flower size
1-3 inches
Flower detail
The Sweet Birch has small green flowers that are tinged with red and mature in early spring. The flower on the Sweet birch has 3" to 4" male catkins.
Bloom time
Spring
Fruit color
Brown/Copper
Fruit type
Nut
Fruit size
1-3 inches long, 1-3 inches wide
Fruit detail
This plants' seed is a nutlet. During summer, 1 to 1.5-inch oblong, erect cones ripen and break apart, exposing the 2 very small, winged nutlets.
Bark color
Dark Brown; Light Gray
Bark detail
The bark of young trees is smooth, breaking into small chip-like plates as it ages. Dark, shiny, tight bark with horizontal lenticels. Crushed twigs smell like wintergreen.
Stem color
Brown/Copper
Wildlife & Ecology
Native status
Native
Origin
Eastern Canada and United States
Wildlife value
It is a larval host plant for the Mourning Cloak and Dreamy Duskywing butterflies. You may see Mourning Cloak (Nymphalis antiopa) which has one flight from June-July, Dreamy Duskywing (Erynnis icelus) with one brood April-July and rarely a second in the south, and Eastern Tiger Swallowtail (Papilo glaucus) which has three flights from February-November in the south and two flights May-September in the north. Many moths also use as a host plant. Its seeds are eaten by birds.
Attracts
Butterflies; Moths; Pollinators; Small Mammals; Songbirds
Host plant for
Mourning Cloak and Dreamy Duskywing butterflies
Play value
Attracts Pollinators; Colorful; Pieces Used in Games; Wildlife Food Source; Wind Shimmer
Food & Medicine
Edible parts
Bark
Harvest time
Summer
Fruit type
Nut

Edibility

Sap has been used for syrup and brewed into beer; however, oil from the bark can be toxic.

Uses (ethnobotany)

This plant is used in the production of wintergreen oil. In the past, the people of the Appalachians cut large numbers of this tree to produce wintergreen oil. 100 saplings and young trees were needed to produce only a quart of the oil. The hard, close grained lumber is used for furniture and interior trims.

Landscape Use
Landscape location
Naturalized Area; Recreational Play Area; Woodland
Landscape theme
Butterfly Garden; Children's Garden; Native Garden; Pollinator Garden
Design feature
Specimen
Garden tags
#deciduous #seeds #children's garden #fire low flammability #gold #catkins #mourning cloak butterflies #deer browsing plant #full sun tolerant #deer resistant #native tree #native garden #larval host plant #colorful leaves #NC native #food source summer #food source herbage #spring interest #sandy soils tolerant #clay soils tolerant #bird friendly #Duskywing butterflies #dry soils tolerant #FACU Piedmont Mountains #showy flowers #Audubon #dreamy duskywing butterfly #eastern tiger swallowtail butterfly #food source hard mast fruit #partial shade tolerant #Coastal FACU #fall interest #playground plant #pollinator plant #wildlife friendly #hortcontest
Problems & Resistance
Resistant to
Deer; Dry Soil; Fire
Particularly resistant to
highly deer resistant; Fire in the landscape.
Propagation
Seed
Fire risk
low flammability

Planted at Hunnicutt

Nobody’s planted this one yet.