My son brought me the columns. He is a landscaper and has his sources, hopefully he got them at wholesale. My guess is he set them on some flat pavers so he could snake the water lines up the columns. I was mostly just the photographer and cheerleader. Here's an updated photo, with the grasses filling in. My granddaughter tends to throw the rocks all over, so they keep getting rearranged. No problem. And there is a stray paver that needs to be relocated. Always something...