Asked: August 25, 20212021-08-25T18:11:21+00:00 2021-08-25T18:11:21+00:00In: Plant Physiology How do Auxins affect plant growth? Saitej Expert What is the main mechanism by which auxin regulates the growth of plants? auxin You must login to add an answer. Username or email* Password* Remember Me! Forgot Password?