Fraxinus chinensis subsp. rhynchophylla, commonly known as Chinese Ash or Toneriko, is a deciduous tree native to various ecosystems in East Asia, including forests, riverbanks, and mountain slopes in China, Korea, and Japan. It exhibits a moderate growth rate, reaching heights of 20-30 feet (6-9 meters) and a spread of 15-20 feet (4.6-6 meters). The tree’s form is typically upright with a rounded canopy, and it produces green, inconspicuous flowers in the spring. While the flowers are not particularly showy, the tree is valued for its lush foliage and adaptability.

Chinese Ash is appreciated for its ability to thrive in urban environments, making it suitable for street and park plantings. It is also used as a shade tree in residential gardens. This species is tolerant of a range of soil types, including clay, loam, and sandy soils, as long as they offer medium to fast drainage. It prefers full sun to part shade and requires moderate watering. While generally low-maintenance, it can be susceptible to pests such as the emerald ash borer, which poses a significant threat to ash trees. Gardeners should be aware of this potential problem and take preventive measures or consider resistant cultivars.CC BY-SA 4.0