Agave cacti are a variety of succulent plant with thick, spiny leaves growing up from the crown of the plant. Many varieties of agave combine to create a rich and colorful succulent family of plants. Agave cacti grow reliably in dry conditions, often producing small "pups" growing in the soil beneath the parent plant. Transplant either an agave pup or a full size plant using a similar procedure.
Choose appropriately sized planting containers. If you are moving an agave cactus to a larger container, select one that is 2 to 4 inches larger. If you are separating pups, use a 6-inch-diameter container for each pup.
Place a large, flat stone or a pottery shard over the drainage hole in the bottom of the container. Add approximately 1 inch of gravel to cover the bottom of the container. Fill the container approximately halfway with potting soil.
Remove the agave cacti plant from the current container. Turn the container onto its side and tap gently on the sides to loosen the root ball from the sides of the container. Tip the container over slightly to ease the agave cacti out.
Use your hands to loosen the roots gently. This is especially important if the roots have been compacted inside the container. If you are separating pups from a parent agave, gently work them away from the parent plant (make sure to preserve the roots of the pup).
Place the agave plant into the prepared container. Hold the plant so the crown is approximately 1 inch below the rim of the container and fill soil in under and around the plant so it is just under the rim of the container. Pat the soil down firmly to finish planting.
Provide shade for the agave plant immediately after transplanting to reduce transplant shock. Set the containers in a shady location and keep them there until you see new growth on the plants. When you see new growth, this indicates the plants have acclimated and you can move them back to their regular location.