tom A wrote in message . ..
Hi

I just found this NG. and I got some bamboo 2 summers ago from a
friend who lives in Arkansaw, I live in Oklahoma.. the clump was
about 12 feet tall with
canes about 1.5 inches in diameter

Any kind of organic mulch is going to help , a few inches of grass
clippings will not only preserve soil moisture but decay and add
nutrients to the soil.
As for fertilizer a light application of turf fertilizer will do
nicely.
By the 3rd or 4th year it should be near as vigorous as the parent
stand.
Look for the american bamboo society webpages online as they have a
lot of good info.