请用英文写出植树的全过程（步骤）

Planting a Tree
Douglas F. Welsh, Landscape Horticulturist
Texas A&M University, College Station, Texas

Select a site that is in full sun. Dig the hole twice as wide as the root ball (container), and no deeper than the height of the root ball. The soil that you dig out of the hole is what you use to backfill around the root ball. No soil amendments are recommended when planting a tree; therefore, no compost, peat moss, or shredded pine bark should be added to the backfill.

After planting the tree, build a 4-inch tall berm around the edge of the hole. Fill the berm with a mulch (i.e. shredded bark, compost). The mulch and berm make it easier to water the tree and reduce weed competition.

For most trees, staking is not recommended; however, if the tree trunk is not sturdy enough, use two stakes, one on either side of the tree, and give the trunk support for the first year only. Below are diagrams of a typical tree planting.

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