Fraxinus hupehensis, also known as Fraxinus hupehensis, is a deciduous tree of Meliaceae and Fraxinus hupehensis, with dark gray bark and longitudinal cracks when it is old. Vegetative branches are usually prickly. Odd-pinnate compound leaves with narrow wings on leaf axis, 7-9 leaflets (1 1), leathery. Flowers are mixed, dense into short thyrses, and the flowering period is April-May. The fruiting period is September. Light-loving, slightly cold-resistant, drought-resistant, barren-resistant and adaptable. Produced in China, Hubei and other places, cultivated in Beijing and other places.

Sow and breed. Street trees, shade trees. And was included in the China Plant Red Book. Ash tree grows slowly, has long service life, beautiful tree shape and complicated root system. It is a leader in gardens, bonsai and root carving families, and is known as "living fossil" and "king of bonsai".

First, timely germination. Ash has two growing seasons, spring and autumn. In spring, everything recovers, and the earth is full of flowers, which is also the time when the buds of ash trees sprout the most. At this time, the new buds that grow in unnecessary parts should be erased in time. After a short dormancy period in midsummer, the second growth peak will appear in the middle and late August every year. Although there are not as many new buds as in spring, they should be erased in time.

Second, reduce the basin soil. After the Grifola frondosa is shaped, the deep basin should be replaced with a shallow basin to minimize the soil in the basin. At the same time, when mixing soil, it is necessary to add more coal slag appropriately, and the ratio of soil to coal can be half.

Third, control moisture. Water as little as possible. Usually, just keep some water in the basin soil. Just water more water in midsummer. The watering time is mainly in the early morning or morning, so try to avoid watering at night.

Fourth, control fertilization. Because ash trees are very barren-resistant, they can basically not be fertilized after molding. However, in order not to make the trees in the basin too weak, some thin fertilizer can be applied one month before the Grifola frondosa leaves in late autumn.