River Birch


River birch young bark


Introduction

The river birch is commonly seen in swamps and along rivers, but its particular shade of bark color and exfoliating properties lead it to be an excellent ornamental tree. This is made all the more easy by the fact that the river birch is a sturdy, relatively pest- and disease-free tree that thrives in numerous sites.

This tree is eligible for a $100 Tree Rebate. If you’d like help with the planting, check out our RiverSmart Homes program.

More detail: River Birch’s Tree of the Month.

Common Name
River birch

Latin Name
Betula nigra

Leaf
Alternate, simple, pinnately-veined, rhombic to ovate, doubly serrate, with a wedge-shaped base, green above, paler and fuzzy below

Flower
Reddish green male catkins hang near the end of the twig, 2 to 3 inches long; female catkins are upright and light green

Fruit/nut
Cone-like, with many hairy scales, reddish brown, containing many tiny, 3-winged seeds that ripen and break apart in the fall

Twig/branches
Slender, orangish brown in color, smooth or slightly pubescent, with the terminal bud absent

Bark
Smooth on young trees, salmon to rust colored. As it matures it develops papery scales that exfoliate horizontally with creamy to orange-brown colors visible; later on in maturity the river birch develops coarse scales

Form
The trunk typically divides low into several upright trunks but the tree has a general oval, pyramidal, upright or erect shape

Size
It can grow to be 40 to 70 feet in height and have a spread of about 40 to 60 feet

Native Range
Native to the eastern United States from New Hampshire west to southern Minnesota, and south to northern Florida and east Texas

Type
Medium-sized deciduous

Seasonal Colors
Commonly turns a yellow-golden color in the fall

Soil
Grows in acidic, loamy, moist, sandy, well drained, wet, wide range, clay soils

Light
Does well in full sun and partial shade

Similar Species
Paper birch, European weeping birch, gray birch

Pests and Diseases
No serious issues with insects or disease, except for Anthracnose leaf blight, which can harm the leaves

Rebate Eligibility
$100

Of Note
The river birch has become a popular landscape tree because of its distinctive bark and graceful crown.

Because of its tolerance to acidic soils, the river birch has been used successfully in strip mine reclamation.