[header] How to prevent houseplants from damaging the carpet [title] Keep all houseplant pots in an impermeable saucer. [step] The most effective step you can take to prevent carpet damage is to place all pots onto a dish or saucer. Plant pots are designed to let excess moisture slowly drip out of the drainage hole at the bottom of the pot, which poses a risk to carpet and other surfaces. 
Allowing this water to collect on a glazed plate or dish and then evaporate into the air will protect your carpet from water damage. [title] Do not overfill your houseplant pots.