Plant ID forum: Thorny Vine

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Oct 17, 2016 4:29 PM CST

New Member

I'm trying to ID a vine I've been fighting for years. If I know my enemy, I can conquer.

It's a very thorny vine, and does not branch. It usually starts beneath existing bushes and trees (Forsythia and Cedar) and grows to the top - even higher if it can find a taller neighbor. The thorns are 1/2" to 3/4" long, have no discernible growing pattern, and can easily penetrate thick leather gloves. I've attached some pics of a small piece I cut out today.
Thumb of 2016-10-17/skip3/2ca457
Thumb of 2016-10-17/skip3/560c35

Name: Greene
Savannah, GA (Sunset 28) (Zone 8b)
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Oct 17, 2016 4:40 PM CST
It looks like Bristly Greenbrier/Smilax tamnoides. Here is a link with photos:

Others may have a more accurate answer.

Edited to add:
Whichever kind of Smilax/Greenbrier it is, cutting the vine will not eradicate the plant. You will need to dig, dig, and dig some more. Get a crow bar, pry bar, pick ax or whatever tool it takes to remove the huge root mass. Use a Google Image search with the keyword 'greenbrier tubers' to see what is underground.

Edited to add link.
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~~"Leaf of Faith"
[Last edited by greene - Oct 19, 2016 9:04 AM (+)]
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Name: Suzanne
Sebastopol, CA (Zone 9a)
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Oct 18, 2016 11:28 AM CST


Moved to the Plant ID forum so it can be marked as 'solved' when you are satisfied with the ID.
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Name: Tiffany
Opp, AL (Zone 8b)
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Oct 18, 2016 12:48 PM CST
Saw Greenbrier (Smilax bona-nox)
Yours looks like a different species (there are quite a few species of Smilax) but there are some tuber pics there showing what they look like at the surface level, and some pics of excavated ones.
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Name: Myriam
Ghent, Belgium (Zone 8a)
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Oct 19, 2016 5:16 AM CST
Maybe Roundleaf Greenbriar- Smilax rotundifolia, the leaves seem to match but not the amount of thorns along the stems..

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