bron said:Gerry
I wonder what inside temps you keep. Also whether you use humidifiers. Maybe the dry air will give rust a hard time.
Even with a humidifier rust should have a hard time in a house because I don't think the humidity would be set high enough to cause a water film on the leaves that would enable spore germination (one would have to be careful with watering though, and not get any on the plant if there's a chance spores could be present). It is possible to have rust in a house if the plant was infected (not necessarily visibly) before it came indoors but without water on foliage for several hours at a time it should eventually die out in a house, given long enough.
