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Alnus rugosa

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Alnus rugosa - Speckled Alder

Alnus rugosa - Speckled Alder

More About Alnus rugosa

  • Pyramidal to oval growth habit
  • Noted for its speckled bark
  • Oval to rounded leaves, margins uneven and double-toothed
  • Male catkins are slender, scaly and suspended on long stalks
  • Female catkins are smaller, erect and cone-like, clustered at the branch ends
  • Good for wetland areas
  • Bloom Time: April or May

Interesting Notes:

Native to Ontario

Zone:

3

Height:

13-15 m

Spread:

8-10 m

Colour:

Green
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Speckled Alder Growing and Maintenance Tips

Best for moist areas of the landscape, such as stream banks and pond borders. Tolerates poor soil conditions.


Alnus rugosa Characteristics

Full Sun
Full Sun
Partial Sun/Shade
Partial Sun/Shade
Fast
Fast
Low Maintenance
Low Maintenance
Native to Ontario
Native to Ontario

Soil Moisture

Moist to Average
Moist to Wet Soils
Wetland (Root submerged)

Attributes

Deciduous
Catkins

Flowering Time

Spring

Habit

Multi-stem/Clump form
Oval
Pyramidal

Foliage Color

Green

Landscape uses

Screening (privacy)
Woodland/woods edge
Naturalizing

 Suitable Substitutions for Alnus rugosa

Alnus glutinosa

Alnus glutinosa

Black Alder