Once stem plants start growing on the surface they will start shooting roots from the nodes... this is actually good as you can plant each individually.
There are to ways os spreading a stem plant... top them off and replant, or let them grow on the surface, top off once the new plants that start growing at the nodes grow a bit and plant each of the new plants.
There are to ways os spreading a stem plant... top them off and replant, or let them grow on the surface, top off once the new plants that start growing at the nodes grow a bit and plant each of the new plants.