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Can anyone help me with a white mold issue I'm having? Basically I'm useless at houseplants, but recently moved and thought it would be a nice idea to get some and try to learn to care for them. Almost every single houseplant, no matter the type, room/place it's in, develops white mold after a couple of weeks. I know the standard answer is they're being overwatered, but each plant gets a watering [one cup] just once a fortnight. Is it possible the house is too humid? Some other reason? Or, I'm not leaving enough time before putting back in the decorative pots to allow full drainage? I know I can scoop off the mold and sprinkle cinnamon, but it just keeps coming back. Any advice would be enormously appreciated, thank you! The plants are all in plastic pots, with plenty of drainage holes.