rust colored water
I planted a gardenia plant in a ceramic pot, was used and given to me I then noticed rust colored water draining into the drain saucer. It has happened everytime I water the plant. I then repotted the grardenia in a plastic container and again the same thing happened. When I washed the inside of the old pot no rust colored water was visible. What is the problem my pot or the plant and if so why is this happening. I repotted with miracle grow potting mix this time.