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  2. Looking for any success stories for yellow flag iris. I've read imazapyr and glyphosate will work, just looking for some confirmation/first hand experience. Thanks!
  3. Today
  4. Yesterday
  5. Thanks to an interested partner and the advice of experts from across the state (special thanks to DNR FRD, MDARD, and the Forestry Assistance Program), ISN created this quick reference guide regarding how firewood can be heat-treated to no longer bear the threat of moving invasive species. See attached! The "Downloads" page wasn't working at the moment, but I'll put the PDF there as well soon. Firewood heat treat.pdf
  6. I haven't heard about them in the US, and would be pretty skeptical--with knotweeds sprouting through concrete and asphalt, and anecdotal evidence of even puncturing trailer tires (the landowner who told me that didn't get photos, I'm very upset), I would be REALLY impressed if they found a barrier that really worked.
  7. Last week
  8. Katie Grzesiak

    Round goby?

    @Sarah LeSage or Jane Perrino or another aquatics person is probably best able to answer this, but it sure looks like the round gobies I've seen.
  9. Earlier
  10. Claire Peterson

    Round goby?

    Reported to us last week and the person who caught this fish was not 100% sure if it was a Round goby or not. Any help would be appreciated!
  11. Has anyone heard of knotweed root barrier membranes being used in the United States? Either by contractors or municipalities for large projects. There is a new road going in through an acre lot contaminated with F. japonica in Kalamazoo County and they are interested in mitigating it the best way possible. Thanks!
  12. Claire Peterson

    Website Updates

    Hi CISMA coordinators! I just wanted to take a moment to remind you to review your CISMA page on the MISC website and make sure all the information is up to date! Also, please feel free to upload photographs from last years field season to our Gallery on the forum!
  13. Katie Grzesiak

    Knotweed treatments

    Unfortunately, not really any updates. We've moved away from doing cut-stem and into doing injections due to the complications of disposal, but we've only been doing injections for about a year, and don't have much to report yet.
  14. Leslie Clark

    Knotweed treatments

    Any update on this? I'm curious about using the Clearcast cocktail as a cut-stem application. Are you using the same concentration as for spraying?
  15. Leslie Clark

    Flowering Rush

    I've been working on a couple of small patches in Keego Harbor in Oakland County with hand removal, with the results of the Lake Minnetonka study in mind, which indicates that really meticulous hand removal can be very effective. In September 2016 I recorded that I removed 5 large heavy bags from a particular site that also has cattail and other emergent plants. I used a spading fork to loosen the soil. There were a lot of floating bulbils to capture, including old 'nests' of brown ones, and I used a kitchen sieve or colander to capture them. For the same site in 2017 I removed only 1 large bag. However, I did the 2017 work in mid-July. It appeared to me that in mid-July, the viable old bubils had pretty much all sprouted, making them visible and identifiable, but the new bulbils were still small and rather firmly attached to the plants. This resulted in very few floaters to be chased down, reducing the odds of spreading it. For my practice sites I was really really meticulous about finding every plant, both new and old in 2017. Follow-up visits later in the summer did not reveal any more plants at those sites. I'm looking forward to evaluating the results of that effort over the next few weeks.
  16. Hi everyone, As I gear up for another summer of battling black swallow wort, I thought I'd share what I've tried so far. Last year I was able to control isolated patches of swallow wort by using Round Up poison ivy killer (contains small amounts of triclopyr) by spraying each plant until dripping. I was using 8 ounces of the concentrate in my 1.33 gallon battery sprayer with a bit (maybe 2 oz, I didnt measure) of 80/20 surfactant from tractor supply. That works well for individual plants. Now, I'm back to tackling my giant monoculture. I obtained some used billboards and put them down mid May. I tried sailing grommets with 4 inch landscaping pins, but that didn't hold. I needed something heavier. I've moved to rocks and milk jugs, which I need more of. The billboards seem to be suppressing growth, but I think being that they're white, they're still letting too much light through. I'm going to get more and double up with two layers. The portions of the photos that show no growth is due to the billboard being blown into a tangle from last winter. I just wanted to share since I know many of us are struggling to get this terrible invader under control.
  17. Some invasive ladybugs feast on other species of ladybugs, but not as much when a kind of toxic aphid is around. View the full article
  18. Claire Peterson

    Report A Problem

    If you are experiencing issues with the website or app. Please use this thread to report the problem to us.
  19. Claire Peterson


    Will do, thanks again Katie!
  20. Thanks so much Katie, I will pass this information along to her.
  21. Four of the images are indeed Japanese knotweed. The fifth (with flowers) is an invasive honeysuckle, likely Lonicera tartarica. Killing knotweed on just the messenger's property likely won't work, as it shares a root system with the neighbor; they will need to work with their neighbor to manage the whole stand together.
  22. Katie Grzesiak


    Definitely not hogweed, but I don't have a lot of guesses for what it could be either; ask for another photo once it's flowering?
  23. Claire Peterson


    From a Facebook message this morning. Doesn't look like but not sure what it could be...thoughts?
  24. Hi everyone, A woman in Norton Shores contacted us through our MISC facebook page about a plant that has started to grow from her neighbor's yard and through their fence. She was wondering if it is Japanese knotweed. Below are images she sent.
  25. The invasive insects turned up in Pennsylvania in 2014. Now the state has placed 3,000 square miles under quarantine, and scientists worry the pest will spread. View the full article
  26. The invasive insects turned up in Pennsylvania in 2014. Now the state has placed 3,000 square miles under quarantine, and scientists worry the pest will spread. View the full article
  27. Sigrid Resh

    help with ornamental grass ID

    Thank you, Jennifer, for the info. page and recommendation for monitoring it--good advice!
  28. Jennifer - Huron Pines

    help with ornamental grass ID

    Hi Sigrid, It's definitely not phragmites, but it looks like a variety of Miscanthus sinensis, which is also known as Chinese or Japanese silvergrass like you guessed. Here's a pretty extensive info page about it: https://www.fs.fed.us/database/feis/plants/graminoid/missin/all.html It seems like some varieties are more aggressive than others, so it's hard to know what this one will do. I haven't been able to find any reports of it being invasive in Michigan although it's reported to be aggressive at least and invasive in other parts of the country and judging from the size of that patch it's pretty happy there. My recommendation would be to look for new patches in the area for proof of spreading and then let the landowner decide if they want to remove what's there or just keep an eye on it. Good luck! -Jennifer NEMI CWMA
  29. Does any one know what this grass is? These are photos from 2016. The grass is growing in Baraga in the UP. Suggestions of Japanese silver grass and phragmites have been provided, but I'm hoping for a positive ID. Thank you for any help any of you can provide... Cheers, Sigrid
  30. Claire Peterson

    Crown vetch

    Gotcha I wasn't aware that it was that popular and actually being recommended.
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