The Floral Tube Rack holder for milkweed cutting arrived quickly and was easy to put together. I was somewhat confused when I realized that there were caps with a slot hole to be attached to each tube. I knew immediately that they were to help hold the milkweed stems straight, but only later did I realize that water was to be placed in the tubes as well. Holy Geez, I actually went to one of them four year college shools. Hmmmm.