Back when I lived at 9005 Aspen Avenue in Albuquerque, New Mexico. I built a greenhouse in my back yard there. I grew many different plants, mostly orchids and various CP.
I used a high-pressure misting/fogging system, supplied by a sump tank, continuously refilled with R.O. purified water. I used a well pump to pressurize the water, then push it through tanks of mixed bed deionizing resins. The R.O./D.I. (polished water - at 18 Meg ohms/cubic centimeter), was then sprayed through misting/fogging nozzles, controlled by a timer, at about 120 psi and distributed about the greenhouse via oscillating fans. This created enough mist, that an empty five-gallon bucket, sitting almost anywhere inside the greenhouse, would fill, in a weeks time.
During the winter, I heated the greenhouse with a vented heater, fired with propane, and supplemented the heat, by inserting a small electric water heater (set at 120F), into the fogging circuit.
It was so wet/foggy, I had to disable the fogging/misting, in order to see what I was doing, whenever I was working in the greenhouse. Many of the orchids were mounted on cork bark, and pieces of cedar shingles. Others were planted in net pots. In these conditions, my 2" pot, tetraploid Cattleya harrisoniana seedling, quickly grew beyond the confines of a 4" net pot and its first bloom was twenty-three flowers.
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Above are the conditions I envisioned when reading about the planting technique, reported on by the OP. With this in mind, watering these plants wouldn't be difficult, or even an issue.