trefle.io · Taken Mar 1, 2019 by Pep Secem (cc-by-sa)
Betulaceae
European alder
Alnus glutinosa
Also known as Black alder, Alnus vulgaris, Betula alnus var. glutinosa, Betula glutinosa
Native Plants · Trees & Shrubs · Native · Tree · Wetland · Nitrogen-Fixing · Deciduous · Wildlife · Naturalistic · Hardy
European alder is an extremely hardy native tree that thrives in moist soils and tolerates wet conditions better than most trees. Once established, it requires minimal care and naturally fixes nitrogen in the soil. Perfect for naturalistic landscapes and areas with poor drainage.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Deep watering when soil surface feels dry · Weekly during dry spells
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 4.5–7.5
- Temperature
- -30°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4a-10b
Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 30 ft
- Spacing
- 180 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Albania, Algeria, Argentina Northeast, Argentina South, Austria, Azores, Baltic States, Belarus, Belgium, Bulgaria, Central European Rus, Chile Central, Chile South, Connecticut, Corse, Czechoslovakia, Denmark, East European Russia, Finland, France
- Attracts
- Bees, Birds
Sources: trefle, usda
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