Alder — Thinleaf/Mountain
Alnus incana subsp. tenuifolia
Alder — Thinleaf/Mountain (Alnus incana subsp. tenuifolia) is a Colorado-native tree suited to the Colorado Front Range, rated "Recommended" on the 2024 Front Range Tree Recommendation List. It matures to about 20–30 ft tall and 15–20 ft wide, and needs medium to high water. Leaf miner; leaf scorch in hot dry sites.
Colorado nativemedium to high water20–30 ft tall and 15–20 ft wide
Photos
At a glance
- Rating
- Recommended
- Botanical name
- Alnus incana subsp. tenuifolia
- Variety / cultivar
- Thinleaf/Mountain
- Type
- Tree
- Mature size
- 20–30 ft tall and 15–20 ft wide
- Water needs
- medium to high water
- Colorado native
- Yes
- Foliage
- Deciduous
- Soil
- clay, loam
- Soil pH
- 6.0–8.2
- Hail tolerance
- moderate
- Wind tolerance
- moderate
- Salt tolerance
- moderate
- Good for
- rain garden
Site factors to consider
- Critical: Cold Hardiness
- Watch: Transplants
Frequently asked questions
- Is Alder — Thinleaf/Mountain good for the Colorado Front Range?
- Yes. Alder — Thinleaf/Mountain is included in the Front Range Plant Finder as a tree suited to Colorado's Front Range, rated "Recommended" on the 2024 Front Range Tree Recommendation List.
- How big does Alder — Thinleaf/Mountain get?
- It matures to about 20–30 ft tall and 15–20 ft wide.
- How much water does Alder — Thinleaf/Mountain need?
- It needs medium to high water once established.
- Is Alder — Thinleaf/Mountain native to Colorado?
- Yes — it is a Colorado native.
