Does it have any rhizomes growing that you have noticed? It may be too early for shoots depending on the species.

I haven't done any digging around it to see if there are any rhizomes growing. I guess that could be something to check on. from the top it looks very healthy. I am not sure of the species but the grove that we harvested it from had very large culms, about 3 inches in dia.

Though digging around bamboo will usually give you a good idea of what's going on underground, in my mind, it's kinda like pulling a tooth to exam it for cavities. If you can avoid digging, don't dig. Instead, examine the new leaf and branch growth above ground. When you look closely at your bamboo above ground, you can see what's happening underground (+/- a day or two).

For example. My P. Nuda has new leaf growth that is approaching 1cm (approx 33% of pre-opened leaf growth). Since the rhizomes of my Nuda are approximately 15cm under the soil surface, I expect that they have grown approx 5cm above the rhizome (33%). The rate of growth varies depending on soil conditions, rainwater, and temperature, amongst other things, but is usually exponential through the first few weeks. Close attention to the rate of growth can really help aid your prediction of shooting.

Hope this helps.