I sowed some beetroot seeds a few months ago in the same bed as some carrots. I moved the carrots when they both needed thinning out and are doing well, however there is a plant growing fast and tall and I don't know what it is. It doesnt look like carrots or beetroot, I think it might be a weed taking up space but it's in a perfect row so I'm not sure. Pics attached. Any help appreciated
Yes, it looks like you have some Lambsquarters in there. This weed is easy to remove by pulling it out.