White Alder, Sierra Alder Alnus rhombifolia - Alnus californica

Detailed Listing For
Botanical Name:

Alnus rhombifolia







Common Name:

White Alder, Sierra Alder

Seeds Per Pound:
0.91 lb
Average Viable Seeds/Packet:
Germination Test Type:
50-80 feet
Collection Locale:
Crop Year:
Minimum Hardiness Zone:
In Stock: 0.91 lb
Items are priced on a curve, you can buy any 'bulk quantity' up to what we have in stock, some examples are:
1 packet (~ 171 seeds)
10 gram (~ 11199 seeds)
1 oz (~ 31750 seeds)
Growing Info, follow in order:
Scarification: Soak in water, let stand in water for 24 hours.
Stratification: cold stratify for 90 days.
Germination: sow seed 1/8" deep , tamp the soil, mulch the seed bed.
In a Nutshell:
* A decidious Tree growing to 12 m at a fast rate.
* It is in flower in March, and the seeds ripen from Oct to January. more...
* Useful for wet spots in West Coast gardens.
* Native to western North America , from Washington east to western Montana and south to California. more...

Conservation Plant Characteristics

Alnus rhombifolia Nutt.
white alder

Duration Perennial
Growth Habit Tree
Native Status L48 (N)
Federal T/E Status
National Wetland Indicator FACW
Active Growth Period Spring and Summer
After Harvest Regrowth Rate
Bloat None
C:N Ratio High
Coppice Potential No
Fall Conspicuous No
Fire Resistant No
Flower Color Green
Flower Conspicuous No
Foliage Color Green
Foliage Porosity Summer Moderate
Foliage Porosity Winter Porous
Foliage Texture Medium
Fruit/Seed Color Brown
Fruit/Seed Conspicuous No
Growth Form Multiple Stem
Growth Rate Rapid
Height at 20 Years, Maximum (feet) 50
Height, Mature (feet) 65.0
Known Allelopath No
Leaf Retention No
Lifespan Long
Low Growing Grass No
Nitrogen Fixation Low
Resprout Ability Yes
Shape and Orientation Erect
Toxicity None
Growth Requirements
Adapted to Coarse Textured Soils Yes
Adapted to Fine Textured Soils Yes
Adapted to Medium Textured Soils Yes
Anaerobic Tolerance Low
CaCO3 Tolerance None
Cold Stratification Required No
Drought Tolerance Low
Fertility Requirement Low
Fire Tolerance Low
Frost Free Days, Minimum 200
Hedge Tolerance Medium
Moisture Use High
pH, Minimum 4.8
pH, Maximum 7.5
Planting Density per Acre, Minimum 50
Planting Density per Acre, Maximum 400
Precipitation, Minimum 20
Precipitation, Maximum 125
Root Depth, Minimum (inches) 12
Salinity Tolerance None
Shade Tolerance Tolerant
Temperature, Minimum (°F) -24
Bloom Period Fall
Commercial Availability Routinely Available
Fruit/Seed Abundance High
Fruit/Seed Period Begin Summer
Fruit/Seed Period End Summer
Fruit/Seed Persistence Yes
Propagated by Bare Root Yes
Propagated by Bulb No
Propagated by Container Yes
Propagated by Corm No
Propagated by Cuttings Yes
Propagated by Seed Yes
Propagated by Sod No
Propagated by Sprigs No
Propagated by Tubers No
Seed per Pound 687000
Seed Spread Rate Rapid
Seedling Vigor High
Small Grain No
Vegetative Spread Rate None
Berry/Nut/Seed Product No
Christmas Tree Product No
Fodder Product No
Fuelwood Product Medium
Lumber Product Yes
Naval Store Product Yes
Nursery Stock Product No
Palatable Browse Animal Low
Palatable Graze Animal Low
Palatable Human No
Post Product Yes
Protein Potential Low
Pulpwood Product Yes
Veneer Product Yes
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