The mistake I see most often with wooden trellises is choosing the pattern before the purpose. A trellis can support a climbing plant, screen a view, or anchor a wall — but the structural choice changes for each. Cedar handles moisture well, but only if the base is off the soil and the fasteners are right for the climate.
https://www.omnihomeideas.com/patio-lawn-garden/wooden-trellis-ideas/
