What is this fast growing plant/bush in garden?

Question

On fall of 2021, this plant just sprouted up, and survived the frost. I currently live in Charlotte, NC, USA. It is about 5 feet after growing for 1 year. I also seen it around in other places as I was going, so more likely to be a weed. This plant doesn't produce flowers (until about October) or berries. I tried to search the image on the internet but the results were a nightshade plant but I know it isn't a nightshade plant because their leaves are different from the one's in this image.

Closer picture of leaves:

Another close picture of leaves:

Flowers (came about October):

Answer 1

Baccharis halimifolia — eastern false willow is common (weed) in south eastern US.

From the linked site especially compare to this photo.

https://identify.plantnet.org/ says 10%. If you are not sure it is this species, we need more details.