In summer, elm seedlings enter the stage of rapid growth. In the garden, shaping elm seedlings can improve the ornamental value of seedlings, thus increasing the price of seedlings. However, different seedlings have different plastic methods, and the seedlings in the garden green space bear a variety of functional tasks, so the forms of plastic surgery are not the same, but in summary, they can be divided into the following three categories:

Natural plastic surgery.

Ulmus pumila seedlings have formed various forms due to different branching methods and growth and development conditions. Proper pruning and shaping on the basis of maintaining the original natural shape is called natural shaping. In the garden green space, natural shaping is the most common and the most labor-saving to implement. Moreover, natural shaping conforms to the growth and development habits of seedlings, so it can often promote the good growth and robust development of seedlings, give full play to the appearance characteristics of seedlings, fully reflect the natural beauty of gardens, and most easily obtain good ornamental effects.

The basic method of natural shaping is to use various pruning techniques to adjust and promote the shape of seedlings according to their natural growth characteristics, so that they can form natural shapes as soon as possible, mainly to suppress or cut off the phenomena of disturbing the growth balance and destroying the shape of all kinds of long branches, redundant branches, cavity branches, combined branches, dead branches, pests and diseases, and to maintain the symmetry and integrity of the shape of seedlings.

Manual plastic surgery

According to the needs of garden viewing, the seedlings of Ulmus pumila are forcibly trimmed into various specific shapes, which is called artificial shaping. Because artificial shaping is contrary to the growth and development characteristics of seedlings themselves, once plants are not pruned for a long time, their shape effect will be easily destroyed, so they need to be pruned and reshaped constantly. Seedlings suitable for artificial shaping are generally varieties with strong pruning resistance, strong germination ability and strong branching ability.

Common plastic forms have various regular geometric shapes or irregular shapes, such as birds, beasts, castles and so on.

Forming method of geometric shape

Through pruning and shaping, the final shape of seedlings becomes various geometric shapes, such as cubes, cuboids, trapezoid bodies, cylinders, spheres, hemispheres or irregular geometric bodies. This kind of plastic surgery should be carried out according to the composition law of geometry. It should be noted that when pruning the sphere, the pruning shears should be turned over, and the curve can be trimmed on the plant with the reverse side of the pruning shears. In addition, when pruning, it is generally necessary to cut the upper part first, and then trim the lower part until the soil.