Steve, I am pretty sure I read somewhere that some nurserymen use a technique like what you described to propagate larger bamboos, though I don't really know any details. From what I can tell, at least some of the 1gal mail-order plants I have gotten were probably made this way, not sure though. I have also gotten bamboos from ebayers and forum members that were grown in 3-4 inch pots and the rhizomes were pencil-thin. I got bory, Robert Young, Phyllo humilis, and some others (including groundcovers which aren't as hard to get small diviisions of anyway) in such small pots. They seem to be vigorous and doing fine but I assume it adds at least a year to the plants' maturation time over getting even good 1 gal plants. For me, though, as long as a plant is viable the cheap plant cost and shipping outweighs the negatives of waitimg a bit longer for the plant to get big. Plants that small, though, get container grown to at least 5-10 gal size before they go in the yarden
