Cinda, you are absolutely right-on. The vast majority of our houseplants are tropical plants, and they would benefit by spending the spring-fall outside. Of course, lots of them are shade-loving plants (which is what makes them good houseplants), so they would need to be protected from the sun. I make sure mine get no direct sun between 11:00 AM and 4:00 PM. If they can get a few hours or early morning and/or late afternoon sun, so much the better.