Here is how I make my half moon moss poles, aka D shaped moss poles. I basically followed the tutorial posted by @felmiirwan, with a modification of making the plastic sheet at back longer so I can Amazon.com : Eden Brothers Illinois Wildflower Mixed Seeds for Planting, 1 oz, 30,000+ Seeds with Cosmos, Blanket Flower Attracts Pollinators, Plant in Spring or Fall, Zones : Patio, Lawn & Garden Don't Waste That Dry Potting SoilThese Easy Tricks Restore It Fast Starting seeds in egg cartons for kids