How long will 4x4 post last in the ground?

How Much Weight Can 4x4 Post Hold

How long will 4x4 post last in the ground? 4x4 tz elevated post base: amazon.co.uk: diy & tools

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4X4 Tz Elevated Post Base: Amazon.co.uk: DIY & Tools

4X4 Tz Elevated Post Base: Amazon.co.uk: DIY & Tools
4X4 Tz Elevated Post Base: Amazon.co.uk: DIY & Tools

How long will 4x4 post last in the ground?
How long will 4x4 post last in the ground?