This type was made over a glass bowl (covered in plastic wrap), with the concrete over it. The stem is a bud vase with the concrete mix over it. These are my new favorite stem, and the easiest! And the bud vases come in some very cute shapes.
42 BEST tutorials on how to build amazing DIY greenhouses , simple cold frames and cost-effective hoop house even when you have a small budget and little carpentry skills! Everyone can have a productive winter garden and year round harvest! A Piece Of Rai