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Wetland/watershed grasses #762441

Asked July 18, 2021, 7:08 PM EDT

This grass is growing aggressively on our beach property. We need to know it’s exact name to determine if it’s invasive. Can you help?

Anne Arundel County Maryland

Expert Response

We would like to see better photos of the grass inflorescence (flowering part) and also the roots, if possible. Can you lay the grass flower down on a piece of paper next to a ruler or coin and take a clear photo, please? Does the grass stay in sparse clumps or does it spread/creep by running roots? Is it easy or difficult to pull up? What are the conditions where it is growing? (Full sun/shade?) Is it something you are trying to manage on a lawn or in a natural area of the property?

Christa

Thank you, Christa.  I sent 3 different sets of grass pictures.  Could you resend the image associated with this request? I can get the info to you shortly. 
Lisa

On Mon, Jul 19, 2021 at 10:42 AM Ask Extension <<personal data hidden>> wrote:
The Question Asker Replied July 19, 2021, 11:04 AM EDT
Hi Christa 

Here are the images you requested.  I also found a fourth grass when I went down there.  Should I input that into the official request form? Or can I send it to you in an email?

This grass is growing in a relatively shaded area, so let’s say partial.  It’s among several other sedges/rushes and the tree you have identified, so I can’t say it grows in clumps.  However, it is not easily pulled out, very embedded in the ground, would require digging (which we don’t have permits for at this time.)  

imageimageimage

Sent from my iPhone

On Jul 19, 2021, at 12:19 PM, Ask Extension <<personal data hidden>> wrote:


The Question Asker Replied July 19, 2021, 1:43 PM EDT

Lisa,
Unfortunately, these photos are too small and do not open to a larger size to show enough details. This does not look like any of the common grassy lawn weeds or invasive weeds that we usually see, and I wasn't able to find a match in the VA Tech Weed ID key. Grasses with a delicate open panicle-type inflorescence like this could be in the genus Glyceria, Eragrostis, or Panicum (among others). You can explore the species on the Maryland Biodiversity Project website. https://www.marylandbiodiversity.com/viewChecklist.php?family=Poaceae

Grasses are notoriously difficult to identify (even more so just by photos). In Anne Arundel County, you have the option to bring in plant samples to your county Extension office for identification. Sample drop-off instructions are listed on the website if you would like to pursue this option. https://extension.umd.edu/locations/anne-arundel-county

Christa

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