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Yellow Floating Heart is an herbaceous, perennial, aquatic plant
that has long, branching stems up to 0.1 inch thick. It often
covers the water surface with long-stalked heart-shaped leaves.
Its leaves are typically opposite and unequal, shaped like a
rounded heart, and measure 2-6 inches in diameter. It has bright
yellow flowers that rise a few inches above the leaves. Its flowers
have five petals with fringed edges, and measure 1-1.5 inches in
diameter. The seeds of this plant are contained in beaked capsules
that measure 0.5-1 inch in length. The seeds themselves are flat
and oval in shape and have ciliate margins that measure 0.1 inch in
Look for heart-shaped floating leaves with wavy margins and a
purplish underside. Showy, yellow, 5-petaled flowers on stalks that
rise a few inches above leaves and water surface.
Unlike native water lilies, yellow floating heart typically has
two to five distinctly fringed flowers per stalk.
A. Control is
difficult and eradication may be unrealistic. The best control is
to prevent the introduction of any non ‐native aquatic plants from
water bodies. Yellow floating heart is very difficult to control
through mechanical and chemical means once it has been established.
If plants are harvested or cut, all plant pieces should be removed
from the water.
Yellow floating heart is a
relatively new invasive, so chemical and physical control methods
are not well-established, we have listed some possible herbicide
control options which most industry professionals and aquatic plant
managers agree should work based on the plant's life
A number of herbicides have been
ruled ineffective at controlling yellow floating heart. These
include 2,4-D, tirclopyr, diquat and fluridone.
A. Once water
temperatures are around sixty degrees or warmer and/or the plant is
A. If roots are not
killed, regrowth may become evident within 4 to 5 weeks
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