The soda bottle irrigator is then planted within the back garden or within a pot with its neck and lid opening higher than the soil level, next to a freshly installed plant. Extensively water the soil across the plant, then fill the plastic bottle irrigator with water. Image: amazon.com See https://keeganawrkd.blogdal.com/29983812/how-plant-feeder-water-can-save-you-time-stress-and-money