Native: California, Western North America from the Sierra Nevada to Montana.
An Alnus rhombifolia in Devil's Punchbowl is registered as a California Big Tree. It measures 94 feet high, with a trunk circumference of 127 inches and a crown spread of 46 feet.
- Shape: Conical
- Foliage: Deciduous, Rhomboidal, Medium to Dark Green, Bronze or No Change
- Height: 50 - 90 feet.
- Width: 40 - 70 feet
- Flowers: Inconspicuous. Green or Yellow. Flowers in Spring.
- Fruit: Prolific, Brown or Orange Cone, Medium (0.50 - 1.50 inches), fruiting in Fall, Winter or Summer.
- Bark: Light Gray, Fissured.
- Shading Capacity: Dense in Leaf, Moderate to Dense out of Leaf.
- Litter Issue: Dry Fruit.
Tree Site Conditions & Constraints
- Zones: Sunset 1 - 10 and 14 – 21, USDA Hardiness 8 - 11.
- Exposure: Full Sun to Partial Shade.
Pests & Disease Information
- Susceptible: Aphids, Beetle Borers, Caterpillars and Spider Mites, Powdery Mildew.
Health, Safety & Environmental Concerns
Branch Strength Medium.
Root Damage Potential High.
Health Hazard: Allergy
SelecTree. "Alnus rhombifolia Tree Record." 1995-2018. Mar 20, 2018.
< https://selectree.calpoly.edu/tree-detail/alnus-rhombifolia >