Ingenious mechanism fits most plastic soda bottles, up to 2 liters.
You can adjust the dripper to a slower or faster rate, depending on whether your pot or basket is in sun or shade, indoors or out.
The dripper automatically runs faster or slower, as the temperature varies.
A 2-liter bottle of water can last from one to three weeks. Dripper fits into 6-1/2" spike that delivers water down to the root zone, avoiding surface evaporation.
Tough, green plastic spike and clear dripper housing, so you can see to adjust. Dripper mechanism is a precisely sized copper tube.
Comes neatly blister-packaged for hanging and includes detailed instructions.