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The lifespan of a picket fence largely depends on its material. Wooden picket fences typically last 10 to 15 years with regular maintenance, while vinyl and composite picket fences can last 20 to 30 years or more due to their resistance to weather, rot, and pests. Metal picket fences often exceed 30 years, especially when properly coated to prevent rust or corrosion.

A silt fence should be buried in a trench that is 6 to 12 inches deep. A depth of at least 6 to 8 inches is necessary to prevent water and sediment from running underneath the fence. A deeper trench, up to 12 inches, provides better anchoring during wet and windy weather. To ensure proper installation, look for a red line on the silt fence fabric, which often indicates the correct burial depth. Always adhere to local guidelines and regulations; a professional contractor will be familiar with these requirements.

You’ll need to bury the garden fence about 1 foot underground. It’s tempting to save on materials by burying the fence just a couple of inches, but if you do so, determined pests will still be able to dig under the fence and access your plants. Burying your garden fence deep into the soil is an important step that allows you to attach a wire barrier to the fencing. 

Burrowing animals (like voles, moles, rabbits, and gophers) can’t dig or chew through this wiring, meaning that you’ll be keeping your prized petunias or your robust veggie garden from being eaten.

A fence post set in concrete lasts anywhere from five to over 25 years, depending on how well the concrete was applied and the fence post’s material. Untreated wood posts in concrete could last less than 10 years, but a durable, treated wood set in properly applied concrete could last a few decades. However, all fence posts will wear out eventually, so expect to need to replace your fence post every five to 15 years.