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Growing Info

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

Native to: California, Idaho, Montana, Nevada, Oregon, Washington

Native

Introduced

Alnus rhombifoliaAlnus rhombifolia

Sierra Alder, White Alder

In Stock: 0.721 lb (Total:0.721lb)

Alnus rhombifolia

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0.72 lb CA

Details

Germination:

77%

Germination test:

Cut (Full Seed)

Purity:

99%

Seeds per lb:

502,920

Quantity:

0.72 lb

Collected in:

California

Crop year:

2017

Min. hardiness zone:

Item ID:

1825877

Characteristics

Growing Info

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

Discover the elegance and practicality of Alnus rhombifolia, commonly known as White Alder or Sierra Alder, a fast-growing, medium-sized deciduous tree native to western North America. Revered for its graceful habit, White Alder develops a straight trunk and a pyramidal crown in its youth, which transitions to a more oval shape as it matures. Its ash-gray bark, smooth when young and scaly as it ages, adds to its visual appeal. The foliage consists of broadly ovate, finely toothed leaves that emerge apple green before maturing to a glossy dark green and are accompanied by a display of 6-inch long greenish-yellow catkins in early spring.

Reaching heights of up to 80 feet, this tree thrives in sun to part shade, is remarkably resilient to both drought and wet conditions, and performs well in moderately fertile, well-drained soils. It plays a vital role in riparian restoration, stabilizes stream banks, and is essential for wildlife, supporting over 255 caterpillar species. Its nitrogen-fixing ability enriches soil fertility, making it an excellent choice for ecological restoration and urban landscapes. Resistant to heat and wind, White Alder is a stunning specimen throughout the seasons.