Our client has a large portion of their lot with low-lying native grasses and shrubs that they maintain my mowing about once per year. The area also may contain some invasive weeds, although it is primarily native plants.

Does mowing the "protected" area disqualify the project from this credit? How about the presence of some non-native (possibly invasive) species?

If these situations are ineligible, would ceasing to mow the area during the performance period be sufficient to provide a native area for this credit? Would removing any invasive plants allow the project to earn the credit?