I agree with everything you say, Will. "Houseplant" is just a general term and really means little. Almost any plant can be grown indoors, either part of the year (as I did in Mississippi for 40+ years) or all year. Conditions simply have to somewhat mimic the conditions needed by the particular plant. I've only lived in SE Florida for 10 months, so though every single tropical plant I have is now outside full-time, I have got to sort of unlearn all that I know about growing tropicals and learn how to do it well in my sub-tropical climate. It does come in handy though, to have grown the 1000's and 1000's of tropicals in a temperate USDA zone for all those years. The vast majority of questions here are from folks in temperate zones, not tropical and sub-tropical zones.
