I have a carrotwood tree that I’m having a hard time growing grass under. People have told me the tree kills the grass. I live in southern Florida on the west coast. Is there any type of grass I can grow under this tree?? I’m thinking on planting St. Augustine. Thank You; John
The carrotwood's roots seem to be very hungry and grass and other plants have a hard time competing with them (the roots can also ruin sidewalks nearby), so removing it is probably the best option. Some say that the seed pods or the seeds of carrotwood also kill the grass. If you keep the tree, try to remove all the seedpods that fall. The seeds will also grow readily into carrotwood seedlings. I am not sure of any specific types of grass that would tolerate the tree better.
Also, please see these articles about the carrotwood tree's invasiveness: