let nature take its course

let nature take its course

To let events develop and conclude naturally, i.e., as they would without outside intervention, help, or interference. The phrase can refer to nature literally, or figuratively to manmade situations or events. If we were to let nature take its course and stop maintaining this lot, it would look like the rest of the forest in months. I know he's underperforming, but he doesn't report to you, so I would just let nature take its course and let his department head discover his incompetence for herself.
See also: course, let, nature, take
Farlex Dictionary of Idioms.

let ˌnature take its ˈcourse

not try to change or influence a situation: As a parent, sometimes you need to sit back and let nature take its course; if you try to stop your child from making any mistakes it can be more damaging in the end.
See also: course, let, nature, take
Farlex Partner Idioms Dictionary
See also:
  • allow nature to take its course
  • (as) sure as eggs (is eggs)
  • a penny for them
  • be twiddling (one's) thumbs
  • 57
  • and the rest
  • and how
  • and how!
  • in layman's terms
  • and a half
References in periodicals archive
SHOULD WE FIGHT TO SAVE THEM, OR LET NATURE TAKE ITS COURSE?
What's the difference between refusing a certain treatment in order to let nature take its course and taking a drug prescribed by your doctor to accelerate the process?