I haven’t heard of (or personally experienced) hard water being a problem, but I’ve been told chlorinated/fluoridated water can be. Filtered water, or water that’s sat out for 24+ hrs (this allows chlorine to evaporate), is supposedly better for plant health. Some species are more susceptible to these chemicals than others, but I’m uncertain if chlorine/fluoride alone is enough to kill a houseplant.
I haven’t heard of (or personally experienced) hard water being a problem, but I’ve been told chlorinated/fluoridated water can be. Filtered water, or water that’s sat out for 24+ hrs (this allows chlorine to evaporate), is supposedly better for plant health. Some species are more susceptible to these chemicals than others, but I’m uncertain if chlorine/fluoride alone is enough to kill a houseplant.