Some people water by dipping the pot into a pail, and you add your physan and fertilizer into the pail water. If you water with a hose, you will need to get a garden spray bottle. I use one that you put about a liter of water into, tightly seal the sprayer/top, and then pump to pressurize and spray. Your can also use an inexpensive spray bottle from the dollar store. I make my mix in an old plastic ice tea jug that holds 2 quarts of liquid. I mix everything up, fill my spray bottle and spray my mix onto the leaves and top of potting. I sometimes mix bug stuff, anti fungal, and fertilizer all in the same jug as it saves time. If I have extra left over I pour it on the yard plants. It gives them a boost and some bug protection too.