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Common bladderwort is native to the Northern Hemisphere, and is
known to occur in fifty of the United States. It is found in lakes,
ponds, wet marshes, and rivers and streams; often in water up to 6
feet deep. Several insects, mammals, and waterfowl use common
bladderwort as a food source, and others use the stems as shelter,
or to lay eggs.
Common bladderwort has a habit
of growing quickly and intertwining with other aquatic plants,
requiring frequent maintenance in ponds. Common bladderwort seldom
causes problems within lakes.
Common bladderworts lack roots but have flowers on erect stems
above the water. Yellow flowers emerge above the surface with
3-lobes and a spur underneath.
Underwater the leaf branches or petioles are fleshy and inflated
with air which allows them to float. Leaves are whorled with 4 to
10 lateral leaves which fork often giving them a very delicate
Bladderworts are unique in that the underwater leaves bear small
oval "bladders" that trap and digest small aquatic creatures.
Bladderworts are usually found in quiet shallow, acidic waters and
can form dense mats.
Bladderwort can easily be
distinguished from other aquatic plants by the small, round,
seed-like structures (bladders) that are interspersed throughout
the green foliage.
A. Spot treat as
needed to maintain navigation channels and swimming areas. Remember
this plant is very beneficial and should not be treated where it is
not a nuisance.
A. Once water
temperatures are around sixty degrees or warmer.
A. Several treatments
may be needed throughout the growing season.
A. It really
depends on the product you choose. For most vegetation, control
will take approximately 2 weeks however, tissue damage may be
evident within 2 to 4 days with liquid formulations. Some
products are slower acting with results taking 30 days or more to
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