What's the name of the shelf that supports the trees?

The shelf that supports trees is called seedling shelf. After planting or transplanting, the roots of trees are not extended. In order to prevent them from tilting under the action of external force and ensure their survival rate, fixed brackets are often used to fix them after planting. There are four stakes on the ground, and then four short poles are tied around the trunk to form a four-box. Each intersection of the four boxes is connected to a stake on the ground with a wooden stick. One is four long sticks and four short sticks, and there are four pegs on the ground.

Seedling:

Seedlings are seedlings with roots and stems. All seedlings cultivated in the nursery, regardless of age, are called seedlings before they leave the nursery. Seedling types: seedlings, asexual seedlings, transplanted seedlings and bed-protecting seedlings. Seedlings can also be classified according to trees and shrubs. Generally, there are many trees and shrubs in the north and shrubs in the south, which are mainly caused by the growing climate.