We offer a ready to use mix of 20-20-20 liquid fertilizer. You purchase a jug for $2.00 and you can come back as many times as you like throughout the season and refill for free. The tank is located beside Greenhouse #4 and you can go and refill your jug yourself. The container must be a purchased one from us, and can be found on the shelves leading into The Flower Pot Store. Save the jugs you buy from our store and use only those for refills. We are stating use at your own risk as we will not be wiping down the spout after each customer. We will do at the beginning of each day