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Water Star Grass is an important food
for geese and ducks including northern pintail, blue winged
teal and weed ducks. It also offers cover and foraging
opportunities for fish.
Water star grass generally does not cause issues in Wisconsin
where naturally growing unless nutrient loading and sunlight
penetration is increased. When these conditions occur water star
grass can readily cover the bottom of lakes, ponds and rivers
producing dense stands which cover traditional fish spawning
Water stargrass is grass-like with thin branching dark-green
stems and alternate leaves with no prominent midvein. Water star
grass can grow up to 6 feet long and can form floating
Flowers rise above the surface and are
bright yellow, star-shaped, with 6 narrow petals. Water star grass
reproduces from seeds and through fragmentation. A slender,
multi-branched stem grows from the buried rhizome. Alternate leaves
and a rounded stem can help distinguish from flat-stem pondweed.
Distinctive yellow, star-shaped flowers provides basis for its
Water star grass has grass-like leaves
with no distinct midvein. In summer, water star grass produces
yellow star-like flowers that protrude above the water surface
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 and/or the plant is
actively flowering. Water Star grass responds equally well to
herbicide treatment when mature.
A. Generally one to
two treatments per season is enough.
within 12 - 16 days things will be cleared up.
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