Place a 4- to 5-inch diameter clay pot on a table to use as the new plant container. This size pot can hold multiple plants depending on their size. If transplanting a single plant, which should range from 1 to 3 inches in diameter, use a smaller pot that extends just beyond the leaves of the plant.
Fill a bucket with a mixture of one part potting soil and one part either perlite or aquarium gravel. Mix the materials together using your hands or a hand spade. Fill the pot with the soil mixture until it is three-quarters full.
Place your hand over the top of the old haworthia pot and tilt it to the side. Tap the bottom of the pot with your other hand to loosen the soil ball and slide the plant and the soil out of the pot.
Brush away the soil and examine the roots closely. Prune off any gray or black areas, which are either diseased or dead, by cutting them near the plant base using hand pruners.
Insert the roots into the new pot, digging a deeper hole if needed. The base of the leaves should remain at the top surface of the soil. Add more soil mix around the haworthia to fill in any gaps.
Water the soil mixture well until the top 1 to 2 inches of soil is damp.
Place the repotted haworthia in an indoor location that receives filtered light.