Best lining for an above ground planter?

Hi everyone. In the past I've built an above ground planter out of pressure-treated wood and lined it with weed barrier to prolong the life. After about two months it started to tear and fray. I ended up moving so I don't know how well it faired, but now I'm looking to build another one in a smaller scale. What are the best options for lining these boxes with minimal decay possibilities while still allowing some drainage?
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