incrediFeed Hanging Basket & Tub Drip Feeder is quick and easy to apply, just cut off the end of the tube, and push that end into the soil. The drip feeder will release a steady supply for up to 30 days of plant nutrients. This ready to use feed will encourage healthy growth for a longer flowering season and for fuller patio containers and hanging baskets. Use the Drip Feeders for containers up to 20cm in diameter, for larger pots and baskets use an extra dripper per pot.