I am not talking about how many bines to put on the string but how many rhizomes should be planted by the string. I noticed on the midwest supplies site they reccomend 2 rhizomes per varity. Obviously planting more give you a better chance at success but has anyone had any problems with just one rhizome per varity per string? Would like to plant different varities but if I do 2 per string that will limit the amount i can do. Any thoughts?