Northern Region

Superior DNR Service Center area

Brule River State Forest - Nothing says "July is here" like popping a few freshly picked blueberries in your mouth while swatting at mosquitos! We seem to have a good crop of both this year. Raspberries and June berries are ripening up, too. The weather this week has been a mixed bag--part of the week was warm and humid but last Sunday we saw rain all day and cool temperatures. Rain on the Fourth kept things cool in the morning, but by afternoon the sun was out and the weather had warmed up. The coming week looks sunny and warm, with a chance of some rain again early next week. These warm and humid evenings are perfect for watching fireflies! Even though yellow irises are a showy and beautiful flower, they are an invasive species.

Pulling invasive yellow irises at the mouth of the Bois Brule River. - Photo credit: DNR
Pulling invasive yellow irises at the mouth of the Bois Brule River.Photo credit: DNR

Yellow iris can produce many seeds that can float from the parent plant, or plants can spread vegetatively via rhizome fragments. Once established it forms dense clumps or floating mats that can alter wildlife habitat and species diversity. All parts of this plant are poisonous, which results in fewer wildlife food sources in areas where it dominates. Dense areas of this plant may alter hydrology by trapping sediment. There is a project underway to remove yellow iris and invasive cattails at the mouth of Brule shoreline and wetlands area. The project is a joint effort between UW-Superior Lake Superior Research Institute and Wisconsin DNR. Last Friday, staff from the State Forest, DNR Water Resources Team and UWS LSRI spent the day manually removing these invasive species along the Brule shoreline. - Diane Gobin, visitor services associate


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