Grass and Bamboo: Can I prevent bamboo culms from "diving"?, 1 by D3VNT

D3VNT wrote:
I have some promising culms on my black bamboo (Phyllostachy nigra) planted 2 years ago - but half of the culms emerged almost parallel to the ground, and they look like they are going to dive back into the earth. The best example is in this picture.

Now, I'm not opposed to letting this new colony spread out a bit, but I'd like more culms growing UP as well. Is there any way to convince a culm that it wants to go up instead of out? Or, do I just have to let the little guys do what they will?