Pictures would surely help.

Kt

It might not be bamboo. It could be a giant reed or other plant that looks like bamboo, but isn't, and is seasonal, like Arundo donax. As kentuck says above: Post a picture.

Here are three pictures. If you want more, or these are insufficient, please let me know.

If you can believe it, I actually think a few stalks are trying to get into my garage. I found a couple under the door this morning. Maybe it's not a species that can survive the climate? We live in Westchester County, NY.

http://i51.photobucket.com/albums/f385/gdawg9/bamboo1.jpg
http://i51.photobucket.com/albums/f385/gdawg9/bamboo2.jpg
http://i51.photobucket.com/albums/f385/gdawg9/bamboo3.jpg

Thank you!

Sorry, but that's NOT bamboo. Not sure what kind of grass it is, but it does do well in your area.

{{gwi:423738}}
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Kt

As I suspected, it's some kind of reed grass, and it will dieback each fall.

It is a grass, did you mention it may be dyeing in the middle or not doing well? If so I just saw a great solution on the T.V. show Victory Garden. Take a reciprocating saw ( that's right) step into the center/area which is dying. Insert the blade into the dirt and cut along the perimeter of the area effected. Then cut an "X" in the center. remove the damaged part with a shovel/ spade. Replace the hole with soil and compost. The grass will return and this will save you the effort of digging up and dividing the grass, SOMETHING I've done TOO MANY TIMES
Good Luck and enjoy it looks like a magnificant plant

Thanks! It is indeed grass. I happened to have a tree service giving me a quote to remove a dead tree in my lawn was able to identify.

Now to find the time to trim .... ugh!

Sooooooo...
Just what type of grass is it ????
I would like some for my yard.
Stanc

looks like miscanthus floridulus or something in the miscanthus family

Looks like you have Japanese Silver Grass which needs to be cut back every fall and can divide every two years for further propagation.

Yes thats seasonal,I have it at my pool it gets cut off in fall so it can regrow in spring,spreads too my grass is going around pool corner.