I found this nice-looking acrylic tray about 1.5 inches deep on a sidewalk recently. I filled it with peat and perlite and let it wash in the rain in the last few days. However, as I'm new to growing carnivorous plants, I'm not sure what CP plants would this tray be good for growing with such a shallow depth? It seems like serracenia needs a much deeper container. Any suggestion is welcomed.
Here is the pic: