Find a pot a couple centimeters bigger than the root ball. Use cactus soil or, if you can't find cactus mix, potting soil with lots of grit (about half and half). Be careful to just plant the roots in soil - you may need to stake it. If you can see the old dirt line, use that as the measure. If it has leaves, water but then don't water again until the soil is dry. Don't let it sit in water. If there are no leaves, just dampen the soil to settle it. Plants without leaves can't use water.
