Botanical Name: Alnus tenuifolia
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Common Name: Mountain Alder, Thinleaf Alder  
Plant photo of: Alnus tenuifolia
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Water Saving Tip:

Apply a layer of mulch around plants to reduce moisture loss.

Choose organic mulches, such as shredded bark, compost or aged sawdust.

  • Anatomy

  • Culture

  • Design

Plant Type

Tree, Shrub

 

Height Range

12-25'

 

Flower Color

n/a

 

Flower Season

n/a

 

Leaf Color

Green, Yellow

 

Bark Color

Brown, Grey

 

Fruit Color

Brown

 

Fruit Season

Persistent

Information by: Stephanie Duer
Photographer:

  • Description

  • Notes

The Mountain Alder is a multistemmed large shrub or small tree, growing 15 to 20 feet tall and wide. The dull dark green leaves are thin and oval with serrated margins. Bark is grayish-brown, thin, and smooth, becoming reddish-gray and scaly with age. Catkins are produced during the growing season prior to blooming, and expand before the leaves emerge in the spring. Cone-like fruits enclose a very small winged seed that matures in late summer and persist through winter.