The round part has a kiddie pool as a liner. I planted rhubarb in the right-hand side. I water with well water and use a layer of pine needles to keep in the moisture.
20 months later... The threadleaf sundew and flytraps died in the first winter. Mountain purple pitcher plant died in the second winter. The white tops, hooded pitcher and one of the yellow rubras had a hard time last winter so I pulled them out too. I didn't protect it last winter. The entire bog froze solid and lifted out of the kiddie pool for days. Here are some pictures from yesterday: