Bladderwart is a carnivorous aquatic plant that is an annual. It lacks roots and has yellow flowers with stems that grow above the surface. Under the water, the petioles (leaf stems) form small “bladders” that are filled with air to help the plant float at the surface. Because this plant often grows where there are low nutrient levels, the bladders also will trap and absorb nutrients from aquatic microorganisms. Also, bladderwart reproduces through stem fragmentation so it is able to spread quickly and can be difficult to control.
Bladderwart can be treated using a diquat herbicide. The herbicide used should be a systemic, contact herbicide that will be absorbed into the entire plant.
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| Bladders |
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