Would you consider the lawn itself invasive, since these are often non-native grasses?
Not sure about other lifeforms, but at least for plants, most everything I’ve found in my lawn is invasive (aside from grass), just because it’s a very tough environment for native plants to thrive in.
With frequent mowing, watering, and nutrients, lawns seem to promote/encourage plants that have a quick life-cycle with many seeds. Some of the ones I’ve seen in my lawn are:
- Fourleaf Manyseed (Polycarpon tetraphyllum)
- Black Medick (Medicago lupilina)
- Purslane (Portulaca oleracea)
All of which seem to follow that strategy. The last one is really interesting and was in the news lately as a ‘key to drought resistant crops’. I think they forgot to mention that oleracea refers to vegetable and this ‘weed’ is infact edible (and tastes great!). Because of how it does photosynthesis, it has a tart flavor in the morning, which disappears by the afternoon.