Trees will plant themselves in most places if we give them the space and time to do so.

Small bits of land can be changed by man to be hospitable to trees and here planting by hand would be the only way. Usually tree planting efforts are for man, not nature.

There are some good activities where we can help by watering, weeding around seedlings and protecting from pests which goes beyond planting.

Tree planting feels and is good and engages ourselves with nature. Nature itself can do nature stuff without our help.