Why does nobody talk about setting posts in CLAY soil?

I'm putting up a wood fence around my property, and the ground is PURE CLAY. Every time I dig a hole, it fills with water and won't drain. I've tried using gravel, but the posts still get wobbly. How do you guys make them STAY PUT in this kind of soil?

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3 Comments

andrewwells7mo ago

My neighbor's clay soil fence posts all leaned after one winter, just like mark_rivera said. I ended up using concrete and a ton of drainage rock in each hole to finally get them solid.

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mark_rivera7mo ago

Pure clay" is why my last fence looked drunk.

4

parker_sullivan7mo ago

How deep did you guys dig those post holes? In pure clay, you gotta go way past the frost line or it's just gonna heave every single time.

2