Simple to put together! Make a statement with multicolor petunias flowing down the edge of your balcony or deck. They only get more abundant as summer goes on so go ahead and plant them now. These planters are not self-watering (as in you don't need a watering can) but there is a tray to collect extra water. Three white ones border our roof top deck, bringing new growth and color, just what we need to lift our moods.