American alder-leaf birch
American alder-leaf birch
Betula alleghaniensis
tree☀️ full-sun🪴 moist-loam📏 small🌡️ RHS H7
📋Quick Facts
Height
15.0-25.0m
Spread
8.0-12.0m
Growth
🐢 Slow
Takes time to establish
Water
💧💧 Average watering
Every "7-10" days
About
Useful nitrogen fixer for cool climates.
Top tip
American alder-leaf birch acts as a nitrogen fixer; good in cool, damp locations and mixed plantings.
Also known as: Olsza amerykańska, Aliso americano, Ontano americano, Amerikaanse els, Amieiro-americano, Aulne d’Amérique, Amerikanische Erle, Betula alleghaniensis
Pest Resilience
3/5 — Average
Bronze birch borer can be serious in stressed trees; birch leaf miner common.
The american alder-leaf birch year in your garden
Dispatching imaginary bots to check your garden out...
What to do now
How to Propagate
🌰Seed
Easy🌰Seed
Easy🌰Seed
Easy✂️Cutting
Moderate🌿Layering
Moderate🔗Grafting
Advanced🧪Tissue culture
Advanced🦋Wildlife & Garden Ecology
Attracts
🦋 Squirrels🐦 Birds🐦 Hummingbirds🦋 Butterflies🦋 Butterfly larvae🦋 Other showy insects
Great for supporting local pollinators and wildlife
Hardiness Zones
H1a (tender)H7 (very hardy)
RHS H7
USDA 4–5 equivalent