Chinese elm
Also known as
Lacebark elm, Evergreen elm, Drake elm
Keep this plant’s care guide close at hand.
Get the appAbout Chinese elm
Ulmus parvifolia, commonly called Chinese elm or lacebark elm, is a small to medium tree admired for its distinctive, mottled bark that exfoliates in patches of gray, orange, and brown. Native to East Asia, it bears small, glossy, serrated leaves and forms a graceful, vase-shaped canopy. In warm climates it can be semi-evergreen; in colder regions it is fully deciduous. Inconspicuous late-summer flowers are followed by papery samaras in autumn, with occasional additional seeding in mild areas. Highly adaptable, it tolerates urban pollution, wind, pruning, heat, and drought once established, and it accepts a wide range of soils provided drainage is adequate. The species shows strong resistance—though not complete immunity—to Dutch elm disease and elm leaf beetle, contributing to its popularity as a street tree and as a classic bonsai subject. Mature trees typically reach 9–18 m (30–60 ft) with arching branches and fine twigging that provide winter interest. Best performance occurs in full sun with moderate moisture and a mulch to keep roots cool.
Taxonomy
Properties & Requirements
How to care for Chinese elm
Water
During establishment (first 1–2 growing seasons), water deeply once or twice weekly to moisten the soil 30–45 cm deep, adjusting for rainfall and texture. Thereafter, allow the top 5–8 cm to dry between soakings; deep, infrequent irrigation encourages a resilient root system and drought tolerance. Avoid waterlogged conditions. For containers and bonsai, keep the substrate evenly moist through the growing season, watering until excess drains; reduce frequency in winter but do not allow the root ball to dry out.
Light
Thrives in full sun with 6–8+ hours of direct light, though it tolerates light shade, especially where afternoons are very hot. Full sun promotes dense branching, smaller leaves, strong taper, and the most attractive bark exfoliation. Deep shade leads to sparse growth and greater disease susceptibility. Not suitable as a true indoor tree; bonsai should be kept outdoors with abundant light, moving to bright, cold protection only during severe freezes.
Nutrients
Feed modestly. Incorporate 2–5 cm of compost or well-rotted manure around the dripline each spring. Apply a balanced, slow-release fertilizer (e.g., 10-10-10) at label rates as buds swell, with an optional lighter midsummer top-dressing if growth is weak. Avoid high-nitrogen applications after midsummer to reduce tender late growth. In alkaline soils, include micronutrients (notably iron). For container or bonsai culture, use a dilute liquid feed at half strength every 2–4 weeks during active growth.
Temperature
Hardy in USDA zones 5–10, Chinese elm tolerates winter lows near −23°C (−10°F) when established. Ideal growth occurs at 10–30°C (50–86°F). Container-grown trees need root protection below about −10°C (14°F) via insulation or an unheated shelter. Heat above 38°C (100°F) is manageable with deep irrigation and mulch. Semi-evergreen behavior occurs in mild climates; in colder regions it is fully deciduous. Avoid rapid freeze–thaw cycles on young bark by maintaining mulch and steady soil moisture.
