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Description
Alnus Rhombifolia, commonly known as white alder, is a deciduous tree that belongs to the Betulaceae family. It is native to California and can be found in the western United States and Mexico. The tree can grow up to 60 feet tall and has a broad, spreading crown with smooth gray bark. The leaves of Alnus Rhombifolia are alternate, simple, rhombic-ovate, and dark green in color. In spring, the tree produces small, greenish-yellow flowers that grow in clusters. These flowers are followed by small, woody, cone-like fruit that contains small seeds.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Fagales |
| Family | Betulaceae |
| Genus | Alnus |
Appearance
Alnus Rhombifolia has a broad, spreading crown with smooth gray bark. The leaves of the tree are alternate, simple, rhombic-ovate, and dark green in color. In spring, the tree produces small, greenish-yellow flowers that grow in clusters. These flowers are followed by small, woody, cone-like fruit that contains small seeds. The tree can grow up to 60 feet tall and has a fast growth rate.
Care Guide
Alnus Rhombifolia prefers moist, well-drained soil and full sun to partial shade. The tree is adaptable to a variety of soil types, including clay, loam, and sand. It requires regular watering during the growing season and can tolerate brief periods of drought. Fertilization is recommended in the spring using a balanced fertilizer. Alnus Rhombifolia is hardy in USDA zones 7 to 10.
Common Pests & Diseases
Alnus Rhombifolia is generally resistant to pests and diseases. However, the tree can be affected by aphids, spider mites, and caterpillars. These pests can be controlled using insecticidal soap or horticultural oil. The tree can also be susceptible to root rot, which can be prevented by ensuring proper drainage.
Habitat
Alnus Rhombifolia is native to California and can be found in the western United States and Mexico. The tree is commonly found in riparian areas, along streams, and in wetlands. It is also planted as an ornamental tree in parks and gardens.
Question and Answer
Q: Is Alnus Rhombifolia a fast-growing tree?
A: Yes, Alnus Rhombifolia has a fast growth rate.
Q: What kind of soil does Alnus Rhombifolia prefer?
A: Alnus Rhombifolia prefers moist, well-drained soil and is adaptable to a variety of soil types, including clay, loam, and sand.
Q: What pests can affect Alnus Rhombifolia?
A: Alnus Rhombifolia can be affected by aphids, spider mites, and caterpillars.
Q: What is the hardiness zone for Alnus Rhombifolia?
A: Alnus Rhombifolia is hardy in USDA zones 7 to 10.
Related Plants
- Alnus Incana
- Alnus Rubra
- Alnus Glutinosa
References
- “Alnus Rhombifolia.” California Native Plant Society. Accessed July 22, 2021. https://www.cnps.org/gardening/gardening-resources/alnus-rhombifolia.
- “Alnus Rhombifolia.” San Francisco Botanical Garden. Accessed July 22, 2021. https://www.sfbotanicalgarden.org/plantfinder/plant-detail.php?plantID=187.
- “Alnus Rhombifolia.” University of California Agriculture & Natural Resources. Accessed July 22, 2021. https://selectree.calpoly.edu/tree-detail/alnus-rhombifolia.
