How do you get rid of mudflats?

[Tereth]

How do you get rid of mudflats?

[blazsword]

Got this from the wiki "A mudflat is identified by a barren (with exception to boulders), brown dirt area, only inhabited by the occasional stray animal. While mudflats cannot be plowed, you can pave or plant grass on them. It is also possible to build directly on them, though inadvisable because of decay." So yeah you can remove them by planting grass on it.