 When a pond owner is having problems with species of leguigia or water primrose, there are several avenues that they have to manage this weed. Typically, herbicides or a chemical control are going to be the most effective. Options that a landowner have would be 2,4-D, which comes in a granular form and a liquid form, as well as glycophate, which comes in a liquid form. If the landowner is using a granular form, they must ensure that the granules are able to have good contact by sinking to the bottom of the pond. If using the liquid 2,4-D form or using glycophate, the landowner will need to add an adjuvant or a non-ionic surfactant to ensure that they have good contact with the plant.