When they are on the porch I water with a hose with city water. Occasionally the rain water will blow on the orchids. I water with a can every couple of weeks using Sun Bulb fertilizer https://www.amazon.com/Sun-Bulb-8305-Fertilizer-16-Ounce/dp/B004Z8OL12/ref=mp_s_a_1_8?keywords=Sun+Bulb&qid=1643545820&sr=8-8