This is how:
Water your plant and moisten the cord before setup to start the flow from vase to plant.
Place one end of the Plant Straw in the vase, and the other in the plant. Plant Straws are asymmetric to allow for a variety of setups, so you can use either end in your plant!
To minimize evaporation, place the end of the metal tube at least 3 cm (1 in) into the plant soil.
Adjust the moisture level by placing a shorter or longer length of the cord in the pot and refill the vase regularly.
Plant Straws work through capillary action which slowly moves water from the wet to the drier side.
Wash, cut down, or replace cord as it wears out over time. Use a nylon thread to guide the cord through the tube.