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    • Photo of Alnus incana foliage by Quadell

    Photo by Quadell

    This file is licensed under the Creative Commons Attribution-Share Alike 3.0 license.

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    Alnus incana

    Also Known As

    • Alnus tenuifolia
    • Grey Alder
    • Speckled Alder

    Plant type

    tree

    size

    • H: 40'-60'
    • W: 40'-60'

    planting zones

    • 5a-9b

    Alnus incana plant details

    Alnus incana is a broadleaf deciduous tree with green foliage. Attracts birds. Grows well with sun - shade and standing water - regular water. Adapts to various soil conditions. Does well in acidic, alkaline, average, clay and rich soil. A good option if you're seeking something seaside / salt tolerant and verticillium wilt resistant.

    CHARACTERISTICS OF Alnus incana

    Plant type: tree
    Plant family: betulaceae
    Foliage: deciduous green
    Mature size: 40 FT - 60 FT - wide, 40 FT - 60 FT - tall
    Uses: hedge, serrated leaves, shade tree

    GROWING CONDITIONS for Alnus incana

    USDA Zones: 5a - 9b
    Sun exposure: sun - shade
    Watering frequency: standing water - regular
    Resistant to: seaside / salt and verticillium wilt
    Soil needs: acidic, alkaline, average, clay and rich

    Nursery contributed plant descriptions

    Explorer?s friend, this large, nitrogen-fixing shrub always indicates water; its toothed leaves, yellow in autumn, fall, helping to produce the ?earth sponge? which protect the purity and existence of these fragile streams. S-PSh/M-W

    By: Forestfarm

    Gardening facts about Alnus incana plant

    How to Grow Alnus incana

    • Sun Exposure

      • sun - shade

    • Water Needs

      • standing water - regular

    • Soil Needs

      • clay
      • acidic
      • alkaline
      • adaptable
      • average
      • rich

    • Special Situation

      • seaside / salt tolerant
      • verticillium wilt resistant

    Features

    • Foliage Color

      • green

    • Wildlife

      • birds

    • Foliage Season

      • deciduous

    See other plant types of Alnus for your garden

    Alnus viridis ssp. sinuata

    aka Alnus sinuata, Green Alder, Western Green Alder

    Plant Type

    Tree

    Zones

    6a-9b

    Size

    Height: 10'-40'

    Width: 10'-40'

    • sun - mostly shade
    • even moisture - regular
    Photo of Alnus viridis ssp. sinuata foliage by Sten Porse
    View Plant

    Alnus glutinosa 'Imperialis'

    aka Imperialis Cutleaf European Alder

    Plant Type

    Tree

    Zones

    3a-9b

    Size

    Height: 30'-50'

    Width: 20'-40'

    • sun - mostly sun
    • even moisture - regular
    Photo of Alnus glutinosa 'Imperialis' form by Jean-Pol GRANDMONT
    View Plant

    More Options

    Alnus glutinosa

    aka Black Alder, Common Alder, European Alder

    Plant Type

    Tree

    Zones

    3a-9b

    Size

    Height: 40'-60'

    Width: 20'-40'

    • sun - mostly sun
    • even moisture - regular
    Photo of Alnus glutinosa form by Willow
    View Plant

    More Options

    Alnus rhombifolia

    aka White Alder

    Plant Type

    Tree

    Zones

    6a-9b

    Size

    Height: 50'-80'

    Width: 40'-70'

    • sun - mostly sun
    • even moisture - regular
    Photo of Alnus rhombifolia catkins, foliage by US National Park Service
    View Plant

    More Options

    Alnus maritima

    aka Alnus metoporina, Seaside Alder

    Plant Type

    Tree, Shrub

    Zones

    6a-9b

    Size

    Height: 15'-30'

    Width: 15'-30'

    • sun
    • even moisture - regular
    Photo of Alnus maritima catkins, foliage by US Department of Agriculture
    View Plant
    +12 more Alnus
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