Acer pentaphyllum is the most widely distributed tree species in China.
Five-pointed maple has a beautiful tree shape and beautiful leaves and fruits. When it enters the autumn leaves, it turns red or yellow. Suitable for greening trees in mountains and gardens. Can be set off with other autumn leaves or evergreen trees, and add the beauty of autumn scenery color.
It can also be used as a shade tree, street tree or shelter forest.
The five-pointed maple vein is a deciduous tree with a height of 20 meters.
The leaves are usually palmately 5-lobed, 4 ~ 9 cm long, the base is often heart-shaped, the lobes are egg-triangular, the whole margin, the two sides are hairless or clustered in the axils of the dorsal veins, and the reticular veins on both sides are obviously raised.
Flowers are mixed, yellow-green, and many of them are terminal corymbs. The flowering period is April.
The stone is flat or slightly convex, and the wings are obtuse, which is about twice as long as the stone. The fruit ripens in September ~1October.
Five-pointed maple likes warm, cool and humid climate.
Weak positive, slightly tolerant to yin.
The requirements for soil are not strict, and it can grow on neutral, acidic and calcareous soil, but the soil with deep, fertile and moist soil grows best.
It has a certain drought tolerance, but it is not resistant to waterlogging, and the soil is too wet and easy to rot.
Resistant to smoke and harmful gases, less pests and diseases.
Medium growth rate and deep roots.
Five-pointed maple mostly adopts the plastic way of leaderless trunk modeling.
The drying process before reaching the drying height is the key to the whole plastic trimming work.
When pruning, short cutting and thinning should be used together. First of all, it is necessary to establish trunk extension branches, which have strong advantages for terminal buds and belong to obvious spindle-shaped branches. When pruning, we should restrain the side branches and promote the main branches. For the terminal buds that are weak, dead or underdeveloped, the core should be removed at the top when pruning, and the lower branches should be selected to replace the main branches. The strong bud closest to the main shaft should be left under the incision, and the other pair of raw buds should be peeled off. Later branches are closest to the main shaft, and the position and direction of cutting buds in the second year should be opposite to that in the previous year, so as to ensure that the growth of extended branches will not deviate from the main shaft.
After the trunk extension branch is established, other side branches should be cut off or thinned, and the competitive side branches below the trunk extension branch should be cut off as soon as possible; 1/3 short cutting or thinning can be used in the middle part above the trunk and below the extended branches. When thinning, we should pay attention to make the branches evenly distributed in all directions, balance the tree up and down, and leave weak buds when cutting short, so as to achieve the purpose of restraining the main body from leaning sideways; All branches below 1/3 should be erased.
After the trunk is fixed, leave two layers of main branches, five or six main branches for the whole tree, and then cut it short, with the first layer about 50 cm and the second layer about 50 cm.
In summer, all tillers below the branch point are pulled out.
Select 3 ~ 4 buds with proper direction and uniform distribution on the main branch.
Bud setting for the second time, leaving 2 ~ 3 buds on each main branch to make it develop into branches.
In the future, a circular crown will be formed, and the crown height ratio of the tree will be more beautiful if it is kept at 1∶2.
Buds are broken every year, and tillers, dead branches, pests and diseases, weak branches in the inner chamber and long upright branches are cut off.
Pruning five-pointed maple in winter and early spring is easy to suffer from wind chill and bleeding at the cutting mouth, so it is best to prune it at the end of March and the beginning of April at the initial stage of growth, with less bleeding and easy wound healing, which will not affect the growth of trees.