@Faridat: lovely Maranta. Never seen this kind before (and the Calathea with creamy center in your first picture). Wish we had something like those here.
@plantmanager: probably because I sing to them besides move them outside in summer? LOL. And I will just admit I can not grow Calathea Roseopicta "Medallion", I have tried it twice and they all experienced a slow dying. I can blame the first dying "medallion" for my inexperience as it was the first Calathea I tried. then I bought more Calathea and they have been grown ok. So I bought second "medallion" figured I might doing something wrong the first time, but it was still going down hill, so I just give up :). When wintering inside, I do not do anything to raise humidity at all, no misting, no pebble and water in the saucer, I do shower them now and then though, not every watering, maybe once every two month? I have read that Calathea lancifolia probably the best to deal with low humidity (compare to other calathea that is), so maybe you can start with lancifolia :). Also Stromanthe Sanguinea 'TriColor' is easier than Calathea in my experience. I am thinking of repotting them coming spring. I probably can send you some if you like.
