Rhizome barrier, what is best?
I have 3, 3 gallon containers. One has P. aureasulcata (Giant Yellow strip), P. Heterocycla (Giant Moso) and the last has P. nigra "Henon" (Giant Grey) bamboo's.
I would like to set up 3 different small groves on my property, and by small, I mean about 20'x 4' each. You can dig down about 3 feet and then run into large pieces of broken concrete and brick (old fill from a flooding problem) and above that is hard clay till about 1' from the surface where you find sand/fill dirt and some top soil then sod.
What would the best rhizome barrier material to use?
I was thinking the 30 mil, 24" plastic with a 4' overlap at the ends. I had heard they the rhizome's dont go any deeper than 18" below the surface and the 24" would do fine, with about 3" above the surface. Yet a local nursery tells me to sink in stainless steel walls as the plastic isnt worth much more than paper when it comes to rhizome strength. Granted he is local, but he does not grow, and only occassionally carries, ANY type of bamboo. Being in s/e Michigan, this is not a commonly stocked nursery item (bamboo plants or the barrier) and with only a few weeks left before the first possible frost, I want to get them in the ground soon, even if I have to do the barriers in a week or so.