Yardistry Cedar Poly Greenhouse at Costco! by Rhonda February 23, 2023 3/10/22. © Frugal Hotspot*UPDATE* 1/23/23. The Yardistry Cedar Poly Greenhouse from Costco is a ready-to-assemble kit that comes with all the wood pre-cut, pre-drilled, and pre-stained and includes all hardware… 1 FacebookTwitterPinterestEmail