| Author | Content |
mango61
New London, NH (Zone 5a)
November 11, 2012 11:12 AM Post #9330392
| Any ideas what this is? Photo taken yesterday. The stalks are a purplish colour. There are thorns, spread far apart from each other. Shrub about 7-8 feet tall, in a field. 
Click an image for an enlarged view.
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bryan3
Brunswick, GA
November 11, 2012 11:19 AM Post #9330412
| Sounds like a young Honey Locust tree. Long thorns. Surprisingly weedy. |
mango61
New London, NH (Zone 5a)
November 11, 2012 11:30 AM Post #9330422
| They formed a wide clump about 20 feet long, so I don't think it's a tree ... |
ViburnumValley
Scott County, KY (Zone 5b)
November 11, 2012 6:51 PM Post #9330727
| I don't see a single thorn in the images you provided.
It does look a lot like the invasive species that may go by the name Fallopia japonica now, and has been termed Japanese Knotweed and other common names. I don't believe this species is known for having thorns.
This plant can create huge masses via underground colonizing behavior, and especially likes riparian zones within which to spread - but doesn't necessarily require such conditions. |
Resin
Northumberland
United Kingdom (Zone 9a)
November 12, 2012 9:27 AM Post #9331129
| Ditto to Japanese Knotweed, definite. A seriously nasty invasive weed.
Resin
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mango61
New London, NH (Zone 5a)
November 12, 2012 1:57 PM Post #9331380
| There are thorns -- I touched them. It's not Knotweed ... we have lots of that on our street, near a brook. Knotweed has a much sturdier stem than this did. |
Resin
Northumberland
United Kingdom (Zone 9a)
November 12, 2012 2:48 PM Post #9331425
| The seed panicles have fairly sharp bristly bits which can easily be taken for thorns when dry in autumn. And the stems are starting to rot down for the winter now. Sorry, but this absolutely is Japanese Knotweed. I know it far too well.
Resin
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mango61
New London, NH (Zone 5a)
November 12, 2012 3:07 PM Post #9331447
| All I can say is that it looks nothing like the rest of the knotweed in this area right now. |
GardenGuyKin
Portland, OR (Zone 8a)
November 12, 2012 5:26 PM Post #9331564
| Possibly this area has been treated with herbicide giving it a totally different appearance. |
ViburnumValley
Scott County, KY (Zone 5b)
November 12, 2012 5:44 PM Post #9331579
| Easy solution is to collect some of this obviously vigorous plant, and bring it back to a location where lots of closeup imagery can be procured.
Take a pic of the whole patch while you are out there, too. |
GardenGuyKin
Portland, OR (Zone 8a)
November 12, 2012 5:54 PM Post #9331587
| VV 
Click the image for an enlarged view.
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ViburnumValley
Scott County, KY (Zone 5b)
November 12, 2012 6:01 PM Post #9331591
| Hi, Kin!
Nice thumbs, and appreciated. Just back from Savannah, and I've got my Bluegrass groove going - or Orchard Grass, as the case may be. |
