"J27" wrote:
It's nearly the end of March in my zone 7 and
I feel I should be adding some type of fertilizer
to my bamboo. Any suggestions as to best fertilizer,
best time, etc?

It's grass. Lawn fertilizer. Not sure about the time:
I tend to give it in spring, a bit before the first shoots
show up, or just after I notice the first ones.

Mark.