I need expert help to Choose the best wood species which will endure ground contact for my property wood post fence installation. I want to know which wood type needs the least upkeep while it protects against decay and insect damage and weathering.

I want you to provide me with guidelines about how to space posts and how deep to install them and which material between gravel and concrete should be used for post installation. I want you to suggest budget-friendly materials which will provide strong structural support for both residential and agricultural fencing needs.

The main challenge involves finding ways to stop wood posts from decaying which occurs in locations that experience frequent rain and high humidity. Any expert advice about fence maintenance and durability can help to extend the fence lifespan.