American Green Alder
Alnus alnobetula subsp. crispa
Betulaceae · broadleaf · introduced
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
Canker and Stem Diseases
Catkin Hypertrophy and Leaf Curl
Phytophthora cactorum Collar Rot
Drippy Dieback
Various fungi (Phyllosticta spp., Septoria spp., Cercospo... Leaf Spot
Neonectria ditissima Nectria Canker
Phytophthora spp. (P Phytophthora Root Rot
Podosphaera aphanis var. aphanis Powdery Mildew
Thekopsora minima and Naohidemyces vaccinii Rust