Contents
Description
Alnus Incana, commonly known as the Gray Alder, is a deciduous tree that is native to North America and Europe. It can grow up to 60 feet tall and has a spreading canopy that can reach 30-40 feet in width. The tree has a straight trunk with a diameter of up to 2 feet and a grayish-brown bark that is smooth when young but develops shallow fissures as it ages. The leaves are dark green and oval-shaped, with a serrated margin, and can grow up to 4 inches long. In the fall, the leaves turn yellow before falling off.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Fagales |
| Family | Betulaceae |
| Genus | Alnus |
Appearance
The Gray Alder is a beautiful tree that adds value to any landscape. It has a unique appearance that sets it apart from other trees. The tree has a straight trunk that is covered in grayish-brown bark. As the tree ages, shallow fissures develop on the bark, adding to the tree’s texture. The leaves are oval-shaped and have serrated margins. They are dark green in color and grow up to 4 inches long. In the fall, the leaves turn yellow before falling off, adding a splash of color to the landscape.
Care Guide
The Gray Alder is a hardy tree that requires minimal care. Here are some tips to help you care for your tree:
Water: The Gray Alder prefers moist soil, so water your tree regularly, especially during dry spells.
Fertilization: Fertilize your tree once a year in the spring with a balanced fertilizer.
Soil: The Gray Alder prefers well-draining soil that is rich in organic matter.
Sunlight: The Gray Alder prefers full sun to partial shade.
Hardiness Zones: The Gray Alder is hardy in zones 2-7.
Common Pests & Diseases
The Gray Alder is generally resistant to pests and diseases, but it can be affected by the following:
Alder Phytophthora: This is a fungus-like organism that causes root rot and can kill the tree.
Birch Leaf Miner: This pest feeds on the leaves of the tree, causing brown patches and wilting.
Yellow-Bellied Sapsucker: This bird drills holes in the bark of the tree to feed on the sap, causing damage to the tree.
Habitat
The Gray Alder is commonly found in wetlands, along streams and rivers, and in other areas with moist soil. The tree is native to North America and Europe and can be found in a range of habitats, including forests, meadows, and fields.
Question and Answer
Q: Is the Gray Alder a fast-growing tree?
A: Yes, the Gray Alder is a fast-growing tree that can grow up to 3 feet per year.
Q: Can the Gray Alder tolerate salt spray?
A: Yes, the Gray Alder is tolerant of salt spray and can be planted in coastal areas.
Q: Do I need to prune my Gray Alder?
A: The Gray Alder does not require pruning, but you can prune it to maintain its shape or remove dead or damaged branches.
Q: Can I transplant a Gray Alder?
A: Yes, the Gray Alder can be transplanted, but it is best to do so in the fall or early spring when the tree is dormant.
Related Plants
Here are some related plants to the Gray Alder:
- Alnus Glutinosa (European Alder)
- Alnus Rubra (Red Alder)
- Alnus Rhombifolia (White Alder)
References
- “Alnus Incana.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=277366&isprofile=0&basic=alnus%20incana.
- “Gray Alder.” Arbor Day Foundation, www.arborday.org/trees/treeguide/TreeDetail.cfm?ItemID=817.
- “Alnus Incana.” The Spruce, 8 May 2021, www.thespruce.com/alnus-incana-profile-3269307.
