1, suitable for the north of the valuable saplings are maple, juniper, Quercus serrata, oak, toon, ginkgo, beech and so on.

2, the maple is a deciduous tree, up to 15 ~ 20 meters, flowering in May, fruiting in September, sun-loving, slightly shade-tolerant, preferring cool and humid climate, cold-tolerant, the soil to go is not strict, in the moist, fertile, deep soil growth in the best.

3, Duchess: Duchess, also known as gum wood, for the Duchess family Duchess plants. Tree height up to 20 meters, like warm and humid climate and sunny environment, can withstand severe cold, adult plants in -30 ℃ conditions can be normal survival, the choice of soil is not strict, in the barren red soil, or rocky cliffs can grow. Duchess tree growth rate in the juvenile period is slow, fast-growing period appeared in 7 ~ 20 years, 20 years after the growth rate and reduce year by year.

4, Quercus serrata: Quercus serrata is a landscape garden, courtyard villa area modeling landscape boutique species, produced in Heilongjiang, Jilin, Liaoning, Inner Mongolia, Hebei, Shandong and other provinces and regions, often in the sunny slopes, half-sunny slopes to form a small piece of pure forests or with birch and other components of mixed forests.