@lovemesomejoolery -- One more thing if you go the Iron X route. Add a garden type (like Spray-Grip by Master Nurserymen) surfactant to the dillution. It reduces the surface tension of a liquid and helps the solution adhere to the plant instead of beading up like plain water. You could use dish soap if you use it sparingly, but my experience has been that dish soap tends to foam up until it, too, is diluted enough over time with watering. It won't hurt but it's annoying.