American Green Alder
Alnus alnobetula subsp. crispa
Betulaceae · broadleaf deciduous shrub · introduced
Last updated
Data Maturity Structured
This profile synthesizes data from multiple published sources. Expert field review is in progress.
Quick Facts
Height
3–13 ft
Light
Full Sun to Shade
Hardiness
Zone Zones 1a–8b
Diseases (11)
Armillaria ostoyae Armillaria Root Rot Brown Leaf Blotch [VERIFY] Canker and Stem Diseases Viral agents Catkin Hypertrophy and Leaf Curl Collar Rot Lonsdalea quercina subsp Drippy Dieback Symptom category — not a single disease Leaf Spot Neonectria ditissima Nectria Canker Phytophthora spp. (P Phytophthora Root Rot Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Thekopsora minima and Naohidemyces vaccinii Rust