Houseplants are not just a delight for the eye; they also improve air quality in the home, according to the University of Minnesota Extension. Crotons are a good plant to consider if you want to add houseplants to your home, because they grow well indoors. Crotons make hardy houseplants and, with their year-round colorful foliage, add a splash of tropical color to any room. Move your croton to a bigger pot when it outgrows the old one to maintain a healthy, flourishing exotic houseplant.
Mix 6 parts peat moss, 3 parts pine bark and 1 part sand in a bucket. Add water until the mixture is damp but not saturated. Alternately, use a mixture of 3 parts peat moss to 1 part sand for re-potting your croton.
Fill the new planting pot half-full with the soil mixture. Use a pot that has several large drainage holes in the bottom to allow water to drain away from the root system. Use a pot that is 1 to 2 inches larger than the old pot to give your croton room to grow.
Turn the croton, in its old pot, onto its side. Grasp the base of the stem and gently wiggle it free from the pot. Trim off any rotten or diseased-looking roots.
Place the root ball into the new pot. The base of the stem should be 1 inch below the rim of the pot. Add or remove soil until the croton is sitting by itself on the soil.
Fill in around the root ball until the soil level is the same as the base of the stem. Pat down the soil mixture as you go to prevent air holes from forming around the root system.
Water the soil until it drains from the holes in the bottom. Put the pot in the sink to dry. When it has drained thoroughly, place your croton in a sunny window or on a covered porch.