What is the meaning of the word "planting"?

Definitions:

  1. a collection of plants (trees or shrubs or flowers) in a particular area copy to clipboard noun
    • the landscape architect suggested a small planting in the northwest corner copy to clipboard
  2. putting seeds or young plants in the ground to grow copy to clipboard noun
    • the planting of corn is hard work copy to clipboard
  3. the act of fixing firmly in place copy to clipboard noun
    • I ordered the planting of police officers outside every doorway. copy to clipboard