This is what we have been using for watering the pumpkins and the melons. Since these guys need so much water we decided that getting them at their roots was the best way of watering them. So we bought these Watering Spikes - they come as a 6-pack. We have been very pleased with them so far. Although I will point out that the ground needs to not be rock hard or the stake can snap on the way in. We then used all the 2-liter bottles that we had, instead of taking them to recycling. Cut a hole in the top of the bottle so we can just fill them with the hose when we go around to water. That way we aren't taking them in and out of the ground every time we need to fill them up.