There are a couple of different ways to propagate a spider plant. You can plant a baby spider plant in fresh soil while still attached to the mother plant. Doing this will allow the spiderette to grow roots and establish them before it is trimmed from the base of the plant. You can also propagate a Spider plant by trimming off a small piece of foliage at the base of the plant. Next, you will place the spiderette in a container of water. Replant this trimming in fresh potting soil once the roots establish.