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Flowering rush may provide cover for waterfowl, however due to
its invasive nature it should be eradicated as it can crowd out
native species with higher value to wildlife.
Flowering rush was likely brought
to North America from Europe. While single flowering rush plants
are not a "problem," this exotic can form dense stands which may
interfere with recreational lake use. Flowering rush may also crowd
out native plants and in turn harm fish and wildlife.
Flowering rush is a perennial aquatic plant. It grows 1-4' high
on an erect stem along shores in shallow water. In deeper water
flowering rush grows submerged without producing flowers. Leaves
are sword-shaped and triangular in cross section. An umbrella
shaped flower head develops producing many seeds that may or may
not be viable. Most reproduction is done from its rootstock in the
form of bulb-lets.
Flowering rush is very difficult to identify when not in flower.
It closely resembles many native shoreline plants, such as the
Flowering rush is easiest to identify when flowering. Flowers
grow in umbrella shaped clusters and each individual flower has 3
whitish pink petals. Plants only produce flowers in very shallow
water or on dry sites
A. The entire
population should be treated as flowering rush is not native to the
A. Once water
temperatures are around sixty degrees or warmer.
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.
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