When you take a cutting (or buy a cutting) of any aroid, it should have at a minimum 2 nodes. The node is the only place on the meristem that can produce either a root, or a new shoot. Taking or buying a cutting with only a single node gives you no 'insurance' if anything happens to a node....mechanical damage, rot, whatever, that would disqualify that node from functionality.
This chart was developed by a friend of mine who is the Admin on another gardening site when the craze was going on for people buying unrooted single node cuttings of Monstera deliciosa albo-variegata. These folks were paying in some cases $300 for these single node cuttings and they had a failure rate of 75-80%. It might be helpful to someone who is in the same situation with any aroid, because it applies to all.
