Chinese Elm
Ulmus parvifolia
The Chinese Elm (Ulmus parvifolia), also known as the Lacebark Elm, is a handsome, medium-sized deciduous to semi-evergreen tree distinguished by its beautiful mottled bark that exfoliates in patches of gray, green, orange, and brown to create a striking mosaic pattern. Among the most disease-resistant of all elm species, it has become one of the most popular elm cultivars in American landscapes and one of the most common elm species used in bonsai.
• Reaches 12 to 18 meters tall with a rounded, spreading crown
• Exquisite exfoliating bark in patterns of gray, green, orange, and brown
• Highly resistant to Dutch elm disease and elm leaf beetle
• Semi-evergreen in mild climates, retaining leaves through winter in USDA zones 8 to 9
• One of the most popular elm species for bonsai cultivation
분류학
• Found across a broad range of China, from Shandong and Hebei south to Guangdong and Yunnan
• Also native to Korea and southern Japan
• Grows at elevations from sea level to approximately 800 meters
• Found in mixed deciduous forests, often on moist, fertile soils in valleys and along streams
• Described by the French botanist Adams de Jacobus Loureiro in 1794 as Ulmus parvifolia
• The species name "parvifolia" means "small-leaved"
• Cultivated in Chinese and Japanese gardens for centuries
• Introduced to Western horticulture in the early 19th century
• 'Drake' is the most widely planted cultivar in the United States
Bark:
• One of the most ornamental features: exfoliates in thin, irregular patches revealing a mosaic of gray, green, orange, tan, and brown
• Bark pattern becomes more colorful and pronounced with age
• The "lacebark" appearance provides outstanding winter interest
Leaves:
• Alternate, small, elliptical to lanceolate, 2 to 5 cm long — among the smallest of any elm
• Dark glossy green above, paler beneath, with simply toothed margins
• Leathery texture, more resistant to elm leaf beetle than other elms
• Semi-evergreen in mild climates; deciduous in cold zones
• Fall color is reddish-purple to bronze, often persisting through winter
Fruit:
• Small, rounded, winged samaras, about 1 cm across
• Appear in early autumn (unlike most elms which fruit in spring)
Size:
• Typically 12 to 18 meters tall and 30 to 60 cm trunk diameter
• Moderate growth rate of 30 to 60 cm per year
• Highly resistant to Dutch elm disease, elm leaf beetle, and many other elm pests and diseases
• Semi-evergreen habit provides year-round shelter and food for wildlife in mild climates
• Late-summer to autumn flowering is unusual among elms, extending the availability of elm pollen for insects
• Seeds produced in autumn provide food for birds during migration and winter
• Bark crevices provide overwintering habitat for insects and spiders
• Adapted to a wide range of conditions, from moist streambanks to dry, rocky hillsides
• Roots are less aggressive than many other elm species
• Leaves decompose relatively quickly, enriching the soil
• Widespread and common in its native range in eastern Asia
• Highly valued in horticulture worldwide
• Not subject to conservation concern
• Its disease resistance makes it an important genetic resource for elm breeding programs
• Hardy in USDA zones 5 to 9
• Highly adaptable to a wide range of soils including clay, loam, alkaline, and compacted urban soils
• Drought-tolerant once established
• Full sun to partial shade
• Moderate growth rate of 30 to 60 cm per year
• Excellent street tree, shade tree, and specimen tree
• 'Drake' is the most popular cultivar, valued for its reliable form and semi-evergreen habit
• 'Allee' and 'Athena' are popular columnar and rounded cultivars
• Relatively pest-free and low-maintenance
• Beautiful bark provides year-round interest
• One of the finest trees for bonsai cultivation
Ornamental:
• One of the most popular landscape trees in the southern and central United States
• Prized for its beautiful exfoliating bark, glossy foliage, and disease resistance
• Excellent street tree, parking lot tree, and urban shade tree
• 'Drake', 'Allee', 'Athena', and 'True Green' are popular cultivated varieties
Bonsai:
• One of the most popular and forgiving elm species for bonsai
• Small leaves reduce well, bark develops character quickly
• Very tolerant of root pruning and container culture
• Can be grown indoors with sufficient light
• A staple of Chinese penjing and Japanese bonsai traditions
Timber:
• Hard, dense wood used in China for furniture and tool handles
• Wood is durable and resistant to decay
재미있는 사실
The Chinese Elm is the only elm species that produces its seeds in autumn rather than spring — an adaptation to the monsoon climate of its native East Asian habitat. This unusual fruiting time makes it one of the few trees providing fresh seeds for migrating birds during the autumn migration season, and its semi-evergreen foliage in southern climates offers year-round shelter when most other deciduous trees are bare.
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