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Katie Grzesiak

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About Katie Grzesiak

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  1. There are a few variegated phrag stands out there, but this specimen is reed canary grass's horrible alter-ego, ribbon grass https://www.habitatmatters.org/reed-canary-grass.html You can ID reed canary grass regardless of coloration from the looooong, papery, clasping ligules coming up from where the blade meets the stem.
  2. Legit started laughing at this one--I never would've expected Persicaria to be a mis-ID either, but WOW it sure is! Thanks for the heads-up.
  3. We've only seen it in ROWs, but it is sometimes in wet areas, where it could possibly cause harm. I'd be interested if anyone has seen it impacting wetland communities?
  4. Northwest Michigan Invasive Species Network (ISN) has been working on this a bit over the past few years, and it's (very unfortunately) fallen on the back burner. We usually start with sharing the DNR Protocols and tips & tricks. Personal experience has taught me that compressed air and a broom works really well... as long as the equipment/debris is dry. We also try to impress on folks that even a little decontamination is better than nothing, so if all they can carry with is a long-handled broom, great! We feel like getting folks started with decontamination is the right place to be; once they're used to doing something, we can up the ante a bit and go for BETTER practices.
  5. Mints are hard! Check out https://www.michiganflora.net/genus.aspx?id=Mentha for true mints, and https://www.michiganflora.net/family.aspx?id=Lamiaceae for the whole mint family. You can also reach out to your local MSU Extension and/or Master Gardener program for help. If it does end up being something you want to keep, I'd suggest keeping it in a container to help save your other herbs. Avoid putting clippings in the compost, as this can spread the plant in your garden or in natural areas.
  6. No DNA tests that I know of in Michigan, but I was very heartened by a study shared at UMISC last year. Presented by John Gaskin (et al.) of the USDA and focusing on knotweed populations in the Pacific Northwest, the nutshell was that managers are pretty darn good at IDing the difference between Japanese, giant, and Bohemian knotweeds. He had folks send in samples and their guesses, and I don't remember the exact error rate, but it was REALLY low, to the point where he joked, "I guess you guys know your stuff!" Other people named in the study included Mark Schwarzlaender (U Idaho), Fritzi Grevstad (Oregon SU), Marijka Haverhals (U Idaho), Rober Bourchier (Ag & AgriFood Canada), and Timothy Miller (Washington SU). We have mainly Bohemian and giant knotweed (though I expect we'll find that we do have SOME Japanese if we look more closely) here in ISN's area, and we haven't noticed much of a difference in efficacy; they all die well in the first year of treatment (50-90%), then hang on bit by bit for the next few years, like mean jerks. I think this may be very different for the biocontrol study, however.
  7. Some folks were interested in what to plant after removing garlic mustard, so we put this together. If it helps your landowners, please use it! GM replacement.pdf
  8. Hello all, One of our fantastic FAP Foresters (Dr. Josh Shields) did a (very very small) experiment on the efficacy of "over the counter" herbicides on autumn olive cut-stump and basal bark efforts. The results are attached here, but the short version is, some formulations work pretty well! He wants me to note that the sample size is FAR too small to be scientifically significant, but he's chatting with some university friends to see if they'd pick it up into a full-fledged study. He also notes this is probably fine for small homeowner projects where expertise is low, but that if someone was working with NRCS cost-share or the like, the real-deal BMPs would be the best bet. MCD-Shields cut-stump results.pdf
  9. Hi Shelby, ISN's management is mainly working with Road Commissions to mow when it first starts flowering (now/a week ago) to prevent spreading by seed. That said, in a past life with the Park Service I used the herbicide Plateau (imazapic) to great effect; took a year or two (small patch), but left the grasses alone. It's not aquatic-approved. We use Plateau here at the Boardman River Nature Center to keep spurge out of the gardens, but don't do any larger-scale treatments.
  10. Depends on the size. We've often used loppers, as the stems aren't that big and we may be working with volunteers. However, for the work I think you're describing (lots and lots), I'd suggest something like a brush saw (though a chainsaw would work). Cuts down (hah) on the bending/kneeling and speeds everything up a lot!
  11. We prefer to do manual removal or cut-stump over foliar spray. It works great! We use tricolpyr (Garlon). Very close to 100% (if not 100%) mortality. The only thing you have to look out for is the seedlings, particularly ones that come up in subsequent years.
  12. Manual removal is most effective before it flowers. Asparagus knives (something like this) or other weed forks are really great for getting out the taproot. You can use herbicides too, but get excited about surfactant because it takes a fair amount to penetrate the crazy trichomes/prickles.
  13. I have used glyphosate in the past, but timing is important--it's most effective in early season, before the 2nd year plants bolt. It's easy to target the flowering adults, but that's not very effective--2nd years I've just cut the seed heads to prevent spread.
  14. That's what we do too, except we don't even laminate. They don't look great, but we often don't drive around to get them--when they're on private lands, we often request that the landowner grab them after a week or so. For larger projects, we have "yard signs" that are up during our treatment, and sometimes we leave them up longer. We definitely got back for those, if we leave them up. They don't contain the legal treatment information (we also post those signs), just a general "invasive species management happening, and ISN is doing it" sort of thing to help answer questions about why plants are dying. We'd love to hear if people have thought of better ways!
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