House plants bring beauty to the home and also purify the air inside. Part of caring for house plants requires repotting house plants when they outgrow containers, require continuous watering, need divided, show roots (on soil surface or out drainage holes) or contain white build-up on the soil surface, according to the University of Illinois. Replant house plants during the growing season, which for most plants runs from spring to fall.
Prepare a new container one size larger than the current pot. Choose one that is at least 2 inches bigger in diameter and has drainage holes.
Place a paper towel, coffee filter or screening over the drainage holes to prevent the soil from escaping. Cover the bottom of the pot with a few inches of the new potting soil.
Remove the house plant from the old container carefully, and inspect the roots. Untangle or loosen the roots, and cut off any damaged or weak roots found. Get rid of the top layer of soil around the house plant, if it appears white from salt residue.
Set the house plant in the new pot. Fill in the area around the house plant with enough soil to cover the root ball and maintain the same soil level as previously planted.
Water the replanted houseplant until water drains from the bottom to settle the soil. Add more soil after watering, if the root ball is exposed or the planted height is low.