The aloe vera is a succulent and member of the lily family. One way to start a new plant is by replanting an offshoot, referred to as a pup, taken from the base of an existing aloe vera. Pups typically have roots attached, making it unnecessary to root the pup prior to planting. Another way to start a new aloe vera plant is by taking a cutting of a stem, and then rooting the cutting prior to planting.
Place the cutting in a shaded area for two to seven days, to allow its wounds to dry and heal. When ready to proceed, the cut area feels dried and callused.
Fill a shallow container with equal amounts sand and perlite.
Set the cutting (ideally 3 to 4 inches long) in the sand, just deep enough so the cutting stands on its own. Set the cutting in the same direction as it was growing on the plant, do not plant upside down.
Place the container in a warm, shady area and keep the soil barely moist. It might take about a month for the cutting to root. You can tell it has developed roots if the cutting holds to the soil when gently tugged.