Betula lenta (Sweet Birch)

Known for the strongest wintergreen fragrance and the most reliable fall color of any native birch, sweet birch is a strong specification choice for rocky, well-drained upland restoration sites where its resistance to bronze birch borer sets it apart from white-barked relatives.

Species Overview

Betula lenta, commonly known as sweet birch or black birch, is a deciduous tree native to the eastern United States. It typically grows to a height of 50 to 80 feet, with a straight trunk and a narrow, pyramidal crown in its youth that becomes more rounded with age. The tree is characterized by its smooth, dark, almost black bark when young, which becomes rough and fissured as it matures. The leaves are simple, ovate, and serrated, turning a brilliant yellow in the fall - among the best fall color of any birch.

Application

• Upland hardwood forest restoration on rocky, well-drained slopes and ridges
• Specimen and naturalized woodland-edge plantings prioritizing fall color
• Wildlife habitat plantings - attracts caterpillars and provides food for migrating birds
• Sites where bronze birch borer resistance is a priority over white-barked species

Growing Conditions / Specification Data

• Light: Full Sun to Part Shade
• Soil/Moisture Tolerance: Well-drained, acidic soils; tolerates rocky, drier soils better than other birches, as well as clay soils and road salt
• Plant Type: Tree
• Mature Height: 50-80 ft.
• Fall Color: Yellow - considered the best and most reliable fall color among native birches
• Bloom Color / Period: Brown; April-May
• Wetland Indicator Status: FACU (Facultative Upland) - Atlantic and Gulf Coastal Plain region
• Native Range: Eastern United States
• Hydrology: Dry-Mesic
• Root Depth: Deep (24-36 in.) (28 in.)
• Deer Resistance: Yes (Rarely Damaged)
• Growth Rate: Moderate
• Drought Tolerance: Moderate
• Shade Tolerance: Intermediate
• Salinity Tolerance: Moderate
• Flood Tolerance: Low - Typically found on drier upland slopes and ridges rather than floodplains; not documented as flood tolerant.
• Growth Habit: Rounded - conical when young, becoming oval to rounded with age
• USDA Hardiness Zones: 4-7
• Pollinator Value: Larval host, supports bees
• Juglone Tolerance: Tolerant