TaxGuyBill
Level 15

You would get to get very specific details about the "landscaping".  Note what Publication 946 says, and the example it shows.  But be aware some things like fences, walkways, etc. could be a "land improvement", which should qualify for Bonus, but not 179.

 

You cannot depreciate the cost of land because land does not wear out, become obsolete, or get used up. The cost of land generally includes the cost of clearing, grading, planting, and landscaping.

Although you cannot depreciate land, you can depreciate certain land preparation costs, such as landscaping costs, incurred in preparing land for business use. These costs must be so closely associated with other depreciable property that you can determine a life for them along with the life of the associated property.

Example.

You constructed a new building for use in your business and paid for grading, clearing, seeding, and planting bushes and trees. Some of the bushes and trees were planted right next to the building, while others were planted around the outer border of the lot. If you replace the building, you would have to destroy the bushes and trees right next to it. These bushes and trees are closely associated with the building, so they have a determinable useful life. Therefore, you can depreciate them. Add your other land preparation costs to the basis of your land because they have no determinable life and you cannot depreciate them.

https://www.irs.gov/publications/p946#en_US_2020_publink1000107320