These quality wicks will last for years and are specifically designed to draw the right amount of moisture up into the roots of African violets and gesneriads. They are made of Nylon so they will not rot like cotton wicks do. Pots greater than 4 inches in diameter require two wicks per pot. Standard length is 6 inches; call if you need a custom length. Use our African Violet “Wick Mix” for best results.