Bladderwort Control In Lakes and Ponds

Bladderwort Control In Lakes and Ponds

What is Bladderwort?

This free-floating carnivorous weed can form dense mats, especially in shallow, acidic water. Flowers grow above the surface on vertical stalks from a distinctive spur.

Bladderwort is named for the sacs attached to its delicate lacy leaves, which stay submersed. These “bladders” trap and digest tiny aquatic animals that come in contact with them.

Is Bladderwort Good for Lakes and Ponds?

Yes—in moderation. Bladderwort is a native plant that provides food and habitat to fishes and animals. It produces attractive flowers that are usually bright yellow, but sometimes lavender. It grows fast, however, so you may need to control its spread.

To cultivate Bladderwort, transfer whole plants to clear, shallow water in the spring.

What is the Best Way to Manage Bladderwort?

Small patches can be removed by raking. It grows back from plant fragments, so we don’t recommend physical removal of large areas, as this can increase distribution.

Triploid Grass Carp eat Bladderwort, along with many other pond weeds. Stocking these non-native fish is a good long-term solution for biological control if allowed in your state. Keep in mind you typically won’t see results the first year the carp are introduced.

Depending on your specific needs, we may recommend aquatic herbicides. There are various chemicals that could be applied, with varying requirements for reapplication.

It is important to note that chemical controls come with risks and restrictions. Estate Management Services will advise you on whether herbicides are the best option, what and how much to apply, and when.

Management costs depend on the plan you choose. You can schedule a free site survey with Estate Management Services online or by calling our office at 1-888-307-6637.


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