The seeds themselves are actually very small, but the white fluff is more noticeable.

Plant researcher Jessica Savage explained more to us at UMD, by some balsam poplar trees.

"This happens every year. But we're seeing a lot this year. I think it's probably because spring was so condensed into a short period of time. And a lot of plants were all flowering at once. And all those seeds are going to fly off and hopefully land somewhere to make new seedlings," she said.

She also said it could be because last year was a good year for trees, and the trees are producing more fruit. The fruit on those trees looks like dangling little pods, which contain the seeds and fluff.

If you're interested in understanding more about the environment, you can follow her citizen science program called Lake Superior Phenology.

To see the original report and read related stories, follow this link to the WDIO News website.