Common alder (Alnus glutinosa)
Care, watering, light and tips for Common alder on Floravia.
Quick facts
- Family: Betulaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Common alder
Alnus glutinosa, commonly known as black alder or common alder, is a medium to large deciduous tree valued for its rapid growth and ability to improve soil quality. It features rounded, toothed dark green leaves and dangling male catkins that appear before the leaves in spring. It is ideal for planting along riverbanks, in wet areas, or as a shade tree in large gardens, adding a natural and rustic touch to the landscape.
Native range
Europe, North Africa, and Western Asia.
Care tips
It prefers full sun or partial shade and thrives in moist, even waterlogged soils, being very tolerant of different substrate types as long as they retain moisture. Watering should be abundant and consistent, especially during dry periods, as it is a water-loving plant. Avoid planting it in excessively dry soils or those with poor moisture retention, as this can hinder its vigorous development and growth.
How to save a dying Common alder
- Warning signs
- Yellowing or browning, wilted leaves; dry or brittle branches; canker presence.
- First aid
- Check soil drainage and moisture; prune dead branches; apply fungicide if cankers present.
- What kills it
- Prolonged waterlogging; lack of root oxygen; very compacted or poor soil.
- Can it be saved?
- Yes, if drainage or soil issues are corrected quickly and damage isn't extensive.