New member with a few questions. Barrier failure and general info

jamey9695(7b)March 25, 2008

Hello everyone,

First I want to say thank you for the wealth of information here. I have learned a lot on this forum. I have been collecting Bamboo for about 8 years now, mostly runners, some fully contained by barriers, and some controlled by rhizome pruning. I am located in Southern New Jersey, zone 7b.

First question: When I first started this fascination with Bamboo 8 years ago, I began by digging three trenches and lining them with a 40 MIL barrier. One of the trenches has Bisetti Bamboo, and it broke loose at the seems, and has also jumped the barrier at one point. Bisetti seems to be a very vigorous grower up here in 7b. I have a feeling that this was the last trench that I lined that year, and was probably running out of the double faced tape supplied with the barrier. I have the situation under control now, but need to know how to fix the barrier. I wanted to know if I should dig up around the two seems where the breaches occurred and re-tape it with a better tape, and in more places, or maybe go through the extra effort and get a clamp style seem like the one that is sold by Tradewinds. I was also wondering what happens to the rhizome after it is pruned? Does it continue to grow, or does it stop right there? If it stops, maybe it will block other rhizomes from growing past the seem and I can just dig a little and check the seems for new growth twice a year? What would you do?

Second question: I have some PHY Aureocaulis growing in a round retaining wall that is 20 feet in diameter, and 21 inches high at it's lowest point. It is constructed with EP Henry Blocks and it is located on a very firmly packed stone driveway. The stones at the base are 3/4 inch limestone with a 6 inch packed base. The Aureocaulis, much to my delight, is doing very well now on its fourth year. It hasn't even come close to filling the circle yet, so I figure that if I need to make modifications to the wall like making it higher, and adding a barrier to the inside edges, now is the time to do it. I want to be extra careful with this one, since my neighbors well manicured yard is only 30 feet away, and I don't want any accidents to happen. Any advise? Is growing Bamboo in a retaining wall a bad idea? I don't want to do any more work that I have to, as the EP Henry blocks are very expensive, and so is the barrier if I need it. Remember I am in zone 7b, so I am not sure if the Aureocaulis is going to take off like the Bisetti did.

Third Question: Is there an average distance a rhizome will grow before shooting? Luckily the Bisetti in question one put a new shoot up only three feet or so from where it jumped the barrier. If not for that, I may not have discovered the escapees until it was too late and crossed the property line. The answer to this will help me in future plantings, so I know that it is not the end of the world if I miss a rhizome while pruning.

Last question: For those containing runners by rhizome pruning, does the Boo eventually become trained? Does the Bamboo eventually give up growing in that direction making pruning easier, or does it get more aggressive?

Again, thanks to every one here for all of the valuable information. I wish I knew about this forum when I started eight years ago.

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I control bamboo several ways: I trench around it and grow it on a mound, grow in part to full shade(depending on species shade tolerance), grow in competition with tree roots.

    Bookmark   March 25, 2008 at 10:16PM
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With no culm to supply energy it will, over time, stop sending up shoots along that path. The "root" needs the culm for energy. Therefore kick over the shoots, eat them, mow them, whatever.
After a while that rhizome will die! You can not train it persay. I have found a slight difference in directional growth, by watering the plant in the direction I want it to grow! Yet this only works great when small.
Root pruning is the best way to go unless you have a lot of land!

    Bookmark   March 26, 2008 at 1:17AM
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