Uprights can be wood or metal. I use rebar because this is the south and termites destroy many types of wood before a season is over. Flexible green sapling wood can be used to weave between the uprights because it doesn't touch the ground. The life of the wattle or trellis will depend on the wood used. Willow is popular. I use redbud because it is plentiful here, as are pecan sprouts. I've used pecan sprouts as uprights, but they either were eaten off at the ground by termites or the wind blew them down because they weren't far enough into the ground. The beginnings of an early wattle fence I started is below. Made of pecan saplings, it didn't last long.
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