I grow my hamata on windowsill, temps get to 78 to 80 during the day and at night it goes down to 68. I've had this plant for almost 3 months and is growing bigger leaves. I have no idea what humidity is on since I just keep it as a regular house plant. I do mist it in the morning and right before I go to bed. Here is a picture of when I first received it and how it looks now. The recent picture was taking this morning. Hope it helps.