Photo: Walter Siegmund, CC BY 2.5, via Wikimedia Commons
Trees and shrubs
Red alder
Alnus rubra
In stockNative to the USRestorationRiparianHedgerowErosion controlWildlifeLandscape
Red alder is a deciduous tree that reaches about 90 feet at maturity, with a rapid growth rate. Height 20-40 feet, spread 20-30 feet. In the wild it grows in moist soils including loam, gravel, sand, and clay, along streams and lower slopes; often in nearly pure stands.
Water
High
Light
Sun, Part shade, Shade
Hardiness
Zone 4
Mature height
90 ft
| Size | Each | At $10,000+ order | Quantity |
|---|---|---|---|
| 1 gal | $6.40Retail $9.99 | $5.76 | |
| 2 gal | $9.80 | $8.82 | |
| 5 gal | $21.00 | $18.90 |
Orders of $10,000.00 or more get an extra 10% off, applied automatically.
$0.00 in cart$10,000.00
Growing guide
- Growth habit
- Deciduous Tree
- Mature size
- Height 20-40 feet, spread 20-30 feet.
- Growth rate
- Rapid
- Water needs
- High; medium drought tolerance once established; low tolerance of saturated soil
- Soil moisture
- Moist
- Light
- Sun, Part Shade, Shade
- Cold hardiness
- To -22°F (about USDA Zone 4)
- Bloom
- Red, Green, Brown · Mar, Apr
- Grows in
- Moist soils including loam, gravel, sand, and clay, along streams and lower slopes; often in nearly pure stands.
- Native range
- SE. Alaska southeast to central California; also local in N. Idaho; to 2500 ft (762 m).
Wildlife and uses
Attracts: Birds
Good for: Restoration, Riparian, Hedgerow, Erosion control, Wildlife, Landscape
Sources
Hardiness zone is estimated from the USDA minimum temperature. Uses are suggested from USDA plant traits.
