Any plant can be a "weed" when it's causing problems. Many aquarium species are considered noxious weeds when they escape into local waterways (Cambomba, Egeria, Hygrophila, Myriophyllum....).

www.iisgcp.org/products/iisg0122.pdf

Many exotic species could look pretty “weedy” if you found them growing in the wild (covered in sediment, algae, spindly growth). I challenge everyone to change their perception of exotic species as more desirable.

I think it's great that you are willing to experiment with local plant species. You might want to start them in a quarantine tank before introducing to your main tank to avoid introducing snails, hydra or other unintended guest.