I grow all my tolumnias mounted on cork and water every day when inside and twice each day when they are outside. We spend 6 months in Maine and 6 in Miami and all my orchids travel with us. The tolumnias flower in both locations. They need to be bare root and watered with good quality water. If your water is not good, buy drinking water. I feed every time I water with diluted
MSFormula. Bare roots, good water, good air circulation, lots of bright light equals happy tolumnias.