Alnus rugosa
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Hardiness Zone: 2-6 Height: 15-25 feet; 4.6 metres-7.6 metres Spread: 15-25 feet; 4.6 metres-7.6 metres Sun: Full sun to part shade Water: Medium to wet Wildlife: Speckled Alder is both a food source for birds and provides excellent cover for deer and small mammals. Birds will feed on the seeds and buds of this plant. It can also be used for beaver dams. Bloom Colour: Green (female), Reddish-brown (male) Culture: Prefers moist to wet soils. Cooler climates are ideal and it will grow in various soil types. Noteworthy Characteristics: Speckled Alder is more of a large shrub, although it can grow to become more tree-like with an open crown. It has oval, alternate leaves with serrated margins and the bark is smooth, reddish brown with light-coloured horizontal lenticels (pores). The plant produces male and female catkins, the latter of which gives way to cones. The cones are brown at maturity and contain seeds. Garden Uses: Along river banks, erosion control