Possibly. It's hard to tell with such a young plant. Where did you get it?

Bamboo Garden Nursery of Oregon.

That's a first rate, and completely reliable, nursery. They know their plants...you've got moso!

I can also say that moso is one of the few bamboo I've grown from seed, and -- though it's been over 12 years -- your picture looks a lot like what I remember my plants looked like after a couple of years.

thank you for the confirmation. looking forward to planting mine!