Humidity for Houseplants: How to Raise It Without a Humidifier
Your calathea’s leaf edges have gone brown and papery. Not just the tips – the whole outer edge of older leaves is drying out and pulling inward, and it is spreading to newer growth. You have read everything you can find. Every article says the same thing: these plants need high humidity. So you have been misting it almost every day. The crispy edges are still spreading. Here is what those articles didn’t tell you: misting raises the humidity around your plant for about four minutes. Then the water evaporates. The air returns to exactly where it was before you picked up the spray bottle. ...