Not sure about the Oldmanni...but Oldhamii is a clumper for sure...:>)...Z

I'm an oldman and I just can't run the way I used to. So I'm clumpin' from now on.

LMAO!!!!!!!!
thank you for that

Charlestx78757 - As others have said, you probably have Bambusa oldhamii, a clumper. This will be borderline in Austin; the amount of winter damage will depend on the winter and on the specific location. There is a fair sized specimen at the Zilker BG, although somewhat damaged from attempts to control the Bamboo Mealybug, Palmicultor lumpurensis. They tried controlling it by cutting out the affected shoots, which meant essentially all of them. I understand this was not effective and they have bitten the bullet and will now use Merit or an equivalent. This plant gets top killed most years but is still a substantial looking plant. I have one that I kept potted in the barn last winter, but now have it planted in the ground. It is just starting to shoot with the recent rain we got. Good luck, it is a great looking bamboo worth taking a chance with in Austin.

Mike near Brenham TX

Charlestx78757-I bought 3 5 gal "timber bamboo' plants and found out later that they were Dendrocalamus Strictus-aka Male Bamboo. It is also a clumper.