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Description
Ulmus Thomasii, also known as Rock Elm or Cork Elm, is a deciduous tree native to North America. It belongs to the Ulmaceae family and is commonly found in the eastern and central regions of the United States and Canada. The tree can grow up to 80 feet tall and has a trunk diameter of 3 feet.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Rosales |
| Family | Ulmaceae |
| Genus | Ulmus |
Appearance
The Ulmus Thomasii tree has a dense, rounded crown with a spreading and irregular shape. Its leaves are typically 2-4 inches long and 1-2 inches wide, with toothed margins and a rough texture. The leaves turn a yellowish-brown color in the fall before dropping off. The bark of the tree is grayish-brown and corky, with deep furrows and ridges.
Care Guide
- Water: The Ulmus Thomasii tree prefers moist soil but can tolerate some drought. Water regularly during the first few years after planting, and then as needed.
- Fertilization: Fertilize the tree once a year in the spring with a balanced fertilizer.
- Soil: The tree can grow in a wide range of soil types, but prefers well-draining soil that is slightly acidic.
- Sunlight: The Ulmus Thomasii tree prefers full sun to partial shade.
- Hardiness Zones: The tree is hardy in zones 3-9.
Common Pests & Diseases
The Ulmus Thomasii tree is susceptible to Dutch Elm Disease, which is caused by a fungus spread by elm bark beetles. Other pests that may affect the tree include aphids, scale insects, and elm leaf beetles. Regular inspections and treatments can help prevent or control these issues.
Habitat
The Ulmus Thomasii tree is commonly found in rocky or sandy soils near streams or other water sources. It can also grow in upland forests and savannas. The tree is tolerant of drought and can withstand occasional flooding.
Question and Answer
Q: Is the Ulmus Thomasii tree fast-growing?
A: No, the tree is a slow grower and can take several years to reach maturity.
Q: Can the Ulmus Thomasii tree be pruned?
A: Yes, the tree can be pruned to maintain its shape and remove any damaged or diseased branches.
Q: Does the Ulmus Thomasii tree produce fruit?
A: Yes, the tree produces small, winged seeds that are dispersed by the wind.
Q: Is the Ulmus Thomasii tree tolerant of pollution?
A: Yes, the tree is relatively tolerant of pollution and is often used in urban landscapes.
Related Plants
- Ulmus Americana (American Elm)
- Ulmus Parvifolia (Chinese Elm)
- Ulmus Procera (English Elm)
- Ulmus Glabra (Wych Elm)
References
- “Ulmus thomasii.” Missouri Botanical Garden. Accessed August 17, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=l780.
- “Ulmus thomasii.” University of Connecticut Plant Database. Accessed August 17, 2021. https://www.hort.uconn.edu/plants/detail.php?pid=496.
- “Rock Elm.” Iowa State University Extension and Outreach. Accessed August 17, 2021. https://hortnews.extension.iastate.edu/1994/6-24-1994/rockelm.html.
