You can water all your plants at one time, all you need to do is turn on the tap when you need. If you are on a business trip or during traveling, this product could help water your plant every day automatically, save you from bothering your neighbors to help you take care of your plant. (You need to purchase a timer which is not included in this kit). Every nozzle could be adjust individully, it can meet the water demand of different plants at one time. Help you to save enegry, save time, save money and save water!