Can we plant trees in autumn?

Yes, the temperature drops gradually in autumn, the water transpiration is low, and the soil water content is stable. Under the condition of soil temperature in Shang Gao, the roots of cold-tolerant tree species planted in autumn can still grow again, so the survival rate is high. Planting in autumn should also be done as early as possible, preferably as soon as the leaves fall. Practice has proved that the survival rate of deciduous trees such as Populus tomentosa, Sophora japonica and Cotinus coggygria can reach1100% in the middle and late months of10. Evergreen conifers such as Pinus tabulaeformis, Pinus armandii and Sabina vulgaris can be planted in the middle of 5438+/kloc-0 to 5438+0 1 month, and the survival rate can reach 100%. Buxus macrophylla, Buxus microphylla, Ligustrum lucidum with golden leaves and Berberis purpurea can also be planted from the end of 10 to before freezing, and the survival rate can reach 98%. Tree specifications: Tree planting specifications in autumn are the same as those in spring. Generally, the height of evergreen trees is 1.5m ~ 3.5m, the DBH of deciduous trees is 4cm ~ 20cm, and the shrub is 0.3m ~ 2.5m Planting techniques: according to the DBH of trees or the size of clods, dig tree holes and plant them conventionally. The planting depth is 3 cm to 5 cm deeper than that in spring, and the soil should be compacted. Water the first time immediately after planting trees, the second time after 3 days, and the third time after 10. You can seal the hole for the winter by watering it three times. Plant materials that need cold protection can be carried out in the first half of June165438+1October. The next spring, water twice, and then manage as usual.

Note: 1. The water should be poured thoroughly. 2. All seedlings, especially boxwood and other short shrubs, must be planted deeply, and tree holes should be covered after the pit is sealed to prevent cracks from losing water after the northwest wind blows in winter. 3. Shrub should be trimmed in time according to the design requirements after planting cold. Those without cold protection must be cut short, and the branches should be kept long to avoid cold in winter or spring. 4. Cold-tolerant varieties should be planted in autumn, while local marginal tree species and succulent root tree species, such as Magnolia grandis and Liriodendron chinense, should be planted in Tangshan in spring.