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Plant Profile

Alnus glutinosa (Common Alder)

Alnus glutinosa is perfect for wet and difficult sites. The tree is a moderate to  fast growing deciduous species for cold regions. It bears a glossy, dark green leaf. The catkin flowers are providing a nice winter , early spring look.When its young it has a pyramidal growth with multiple trunk ideal to use it as a screen. The fruit is attracting wildlife. Common alder  grows easily in full sun or partial shade in almost any landscape setting due to  nitrogen fixation ability from the soil which enabling these trees to grow in the poorest and wettest soils where other trees might fail.

  • Landscape Information
  • Botanical Description
  • Horticulture Management
  • By Willow (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons
  • By Luis Fernández García (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Letrek (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
  • By Karduelis (Rize-Çayeli) [Public domain], via Wikimedia Commons
  • Lienhard Schulz at the German language Wikipedia [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
  • By Bruce Marlin [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
By Willow (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons

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  • French Name: Aulne ou Aune glutineux

    Pronunciation: AL-nus gloo-tih-N0-suh

  • Plant type: Tree

  • Origin: Europe, Western Asia

  • Heat Zones: 1 to 7

    Hardiness Zones: 3 to 8

  • Uses: Screen, Specimen, Wildlife, Pollution Tolerant / Urban

  • Size/Shape

    Growth Rate: Moderate

    Tree Shape: Pyramidal, oval

    Canopy Symmetry: Irregular

    Canopy Density: Dense

    Canopy Texture: Coarse

    Height at Maturity: 15 to 23 m

    Spread at Maturity: 10 to 15 meters

    Time to Ultimate Height: 20 to 50 Years

  • By Willow (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons
  • By Luis Fernández García (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Letrek (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
  • By Karduelis (Rize-Çayeli) [Public domain], via Wikimedia Commons
  • Lienhard Schulz at the German language Wikipedia [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
  • By Bruce Marlin [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
By Willow (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons

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  • Foliage

    Leaf Arrangement : Alternate

    Leaf Venation: Pinnate

    Leaf Persistance: Deciduous

    Leaf Type: Simple

    Leaf Blade: 5 - 10 cm

    Leaf Shape: Orbiculate

    Leaf Margins: Serrulate, Double Serrate

    Leaf Texture: Glossy, Medium

    Leaf Scent: No Fragance

    Color(growing season): Green

    Color(changing season): Brown

  • Flower

    Flower Showiness: No

    Flower Size Range: 1.5 - 3

    Flower Type: Catkin

    Flower Sexuality: Diecious (Monosexual)

    Flower Scent: No Fragance

    Flower Color: Brown

    Seasons: Spring

  • Trunk

    Number of Trunks: Multi-Trunked, Single Trunk

    Trunk esthetic Values: Not Showy

  • Fruit

    Fruit Type: Cones

    Fruit Showiness: Yes

    Fruit Size Range: 1.5 - 3

    Fruit Color: Brown

    Seasons: Spring

  • By Willow (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons
  • By Luis Fernández García (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
  • By Letrek (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
  • By Karduelis (Rize-Çayeli) [Public domain], via Wikimedia Commons
  • Lienhard Schulz at the German language Wikipedia [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
  • By Bruce Marlin [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
By Willow (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or CC BY 2.5 (http://creativecommons.org/licenses/by/2.5)], via Wikimedia Commons

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  • Tolerance

    Frost Tolerant: Yes

    Heat Tolerance: No

    Drought Tolerance: No

    Salt Tolerance: Poor

  • Requirements

    Soil Requirements: Clay, Loam, Sand

    Soil Ph Requirements: Acidic, Neutral, Alkaline

    Water Requirements: High, Moderate

    Light Requirements: Full, Part

  • Management

    Toxicity: No

    Invasive Potential: No

    Susceptibility to Pests and Diseases: No

    Pruning Requirements: Needed, to develop a strong structure

    Fruit/ Leaves/ Flowers litter: Yes

    Surface Rooting: No

    Life Span: 25-50 years

    Diseases: Powdery Mildew, Canker

    Edible Parts: None

    Pests: Caterpillars, Leaf Miner

    Plant Propagation: Seed, Grafting

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