Paragrass can quickly reach a height of 1.8 m with roots to about the same depth. Paragrass is an aggressive competitor that can displace most agricultural crops and other shoreline emergent plants. In Florida, paragrass only occasionally creates problems at access points or other disturbed areas in public lakes and rivers, but it is a serious weed problem in drainage systems.
Biological controls are unknown in Florida, and mechanical controls are mowing and excavation.