Placeholder

Alnus incana ssp. rugosa

Also Known As

  • Alnus rugosa
  • Speckled Alder

Plant type

tree, shrub

size

  • H: 6'-20'
  • W: 6'-20'

planting zones

  • 3a-9b

Alnus incana ssp. rugosa plant details

Alnus incana ssp. rugosa is a broadleaf deciduous shrub or tree with green foliage. Attracts birds and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and standing water - regular water. Adapts to various soil conditions. Does well in acidic, alkaline, average, clay, lean, rich and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Alnus incana ssp. rugosa

Plant type: shrub or tree
Plant family: betulaceae
Foliage: deciduous green
Mature size: 6 FT - 20 FT - wide, 6 FT - 20 FT - tall
Uses: serrated leaves

GROWING CONDITIONS for Alnus incana ssp. rugosa

USDA Zones: 3a - 9b
Sun exposure: sun - mostly sun
Watering frequency: standing water - regular
Resistant to: verticillium wilt
Soil needs: acidic, alkaline, average, clay, lean, rich and well-drained

Nursery contributed plant descriptions

Crowding as near to the water's edge as it is possible to grow & then leaning over as if hoping to go farther (Keller), these 6-12' shrubs grow along waterways of the NE where their opening catkins spell spring! Sun/Wet

Gardening facts about Alnus incana ssp. rugosa plant

How to Grow Alnus incana ssp. rugosa

  • Sun Exposure

    • sun - mostly sun
  • Water Needs

    • standing water - regular
  • Soil Needs

    • clay
    • acidic
    • alkaline
    • adaptable
    • average
    • lean
    • well-drained
    • rich
  • Special Situation

    • verticillium wilt resistant

Features

  • Foliage Color

    • green
  • Wildlife

    • birds
    • butterflies
  • Foliage Season

    • deciduous

See other plant types of Alnus for your garden

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

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

aka Alnus tenuifolia, Grey Alder, Speckled Alder

Plant Type

Tree

Zones

5a-9b

Size

Height: 40'-60'

Width: 40'-60'

  • sun - shade
  • standing water - regular
Photo of Alnus incana foliage by Quadell
View Plant

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

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
Mailing List
Sign Up for updates on new plant arrivals and deals

© 2010—2026 Plant Lust, LLC All Rights Reserved