I bought a starter blueberry bush a couple of months ago. It has been growing well but there seems to be something else growing at the base. I'm not sure if it's more blueberry stalk or weeds, and I'm hoping someone can help.
That's weeds, it is some kind of grass. Seedlings of blueberries look more like this (first picture).
You can pull the weeds out of there, they compete with nutrients available in the soil.
In Illinois or Texas in the United States, that would be clearly crabgrass.