American Green Alder
Alnus alnobetula subsp. crispa
Betulaceae · broadleaf deciduous shrub · introduced
Last updated
Data Coverage 2 of 6 dimensions
Quick Facts
Height
3–13 ft
Light
Full Sun to Shade
Hardiness
Zone Zones 1a–8b
Diseases (11)
Armillaria ostoyae Armillaria Root Rot [VERIFY] Brown Leaf Blotch [VERIFY] Canker and Stem Diseases Viral agents Catkin Hypertrophy and Leaf Curl Phytophthora cactorum 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 Podosphaera aphanis var. aphanis Powdery Mildew Thekopsora minima and Naohidemyces vaccinii Rust