• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide

Common Alder

Botanical Name
Alnus glutinosa
Hardiness
Zones 4 to 7
Height
40 to 60 feet
Width
20 to 40 feet
Flowers
Male catkins, female purplish egg shaped strobile
Fruit
Winged nutlet borne on egg-shaped woody strobile, persistent
Light
Full sun to part shade
Soil
Moist to wet
Planting & Care
  • Transplants easily in spring
  • Good tree for reclamation sites
  • Fixes own nitrogen
Problems
Wooly alder aphid, tent caterpillar, can become invasive
Varieties
  • Laciniata - dissected leaves
  • Pyramidalis - upright, narrow spread, good disease resistance

Upcoming Appearances


Oct. 27-29, 2020
Home Sweet Home
Virtual Conference
 
Online

Oct. 28, 2020
Why Won't My Hydrangea Bloom
& Other Issues
 
Online

Watch past webinars on demand.

Learn More

Book an Appearance

Learn More

Win the Corona ClassicCut branch & stem pruner, hedge shears & bypass lopper

ENTER NOW