If you don't mind hacking away at the rhizomes once or twice a year, plant away. (Hopefully your neighbors won't be coming after you with the machete.)

Even if you leave a grass verge so you can mow between you and the neighbor it will root across and pop up on his side, if soil conditions there suitable.

You can control by mowing about 20' around the grove or root prune twice a year. Sounds like you have heavy duty equipment and lots of land this bamboo shouldn't be a problem for you at all.

There is a large stand near me on a farm and they manage to keep it out of their planting field.

I hate people who chop down all the trees in their yard. Their land becomes an eye sore. I say...PLANT AWAY. If bamboo were going to take over the world, it would have done it long, long ago. If your neighbor has a problem with it...suggest to him that he sell his house and buy another and this time don't chop down all his trees.

Well, I had made the decision to go ahead and plant bamboo...then I read that the shoots contain cyanide, and I worry that the sheep might poison themselves by eating new shoots. So I guess I have to go back to square one.

Thank you all for your help!

Well, I had made the decision to go ahead and plant bamboo...then I read that the shoots contain cyanide, and I worry that the sheep might poison themselves by eating new shoots.

Huh? The shoots of several species of bamboo are entirely edible, even without being processed by boiling in water, &c.

I have bamboo growing in my sheep pasture and have to protect the bamboo from the sheep, who would otherwise eat all of the new shoots and any leaves they can reach on the culms. Once the culms are tall enough to be above sheep browsing height, then all I have to do is to protect the new shoots during the 3 week spring shooting season. I keep a fence around the bamboo groves in my sheep pasture and keep the sheep out during the shooting season, but let them have access to the bamboo grove for the remainder of the year. The sheep eat all of the shoots coming up outside the fence so the bamboo can't spread and the sheep use the grove for shade during the hot days of summer. I also grow some low-growing Hibanobambusa in another pasture that I let grow unmolested all summer and then let the sheep browse in the winter after the pasture grasses have all been eaten down and I am otherwise having to feed hay.