Use a lawn product formulated for your geographical area. One with no weed killer, of course.

Or you could just visit an independent garden center and pick up a lawn product targeted to the local market. With it not being necessary to find out - or even actually specifically relevant - what appeared to work well for somebody else on their particular site, with their particular soil conditions. With grasses the main thing is that there is a good proportion of nitrogen present in the product. With local soils tending not to need much, if any phosphorus or potassium supplementation. Except for heavily rained upon, sandy soils on the outer coast.

Caitlin-

I have long used Osmocote Flower and Vegetable Smart-Release Plant Food, 14-14-14. It has slow release pellets so you get the fertilizer being applied over many weeks without having to keep applying it. Most of my bamboos are in the ground, and I just throw a small handful around the base of each plant in the spring. During the fall, you can apply some 0-14-14 (no nitrogen) or similar. This will encourage root growth without having the plant put energy into new leaves at the wrong time of the year.

Since bamboo is just a type of grass, any lawn fertilizer (just the fert - no weed control or anything else in the mix) will work perfectly well.

But since I do not fertilize my lawn and can't be bothered to buy a large sack for just a coupe of containers of bamboo, I use Osmocote as well :-)