I know nothing, but have been told the one-third rule. That is, plants, trees, shrubs, lawn grass maybe, can tolerate cutting one-third of their green away. Something like that. But the story never included how often one can do that... :(
Discussion
Hmmm. That's the golden rule for mowing normal grass... Worst case I kill it for this season. I'll yolo here this week when the weather gets cooler.
