Pesky, Thorny Vines - Knowledgebase Question

Spring Hill, FL
Question by nun0
June 11, 1999
There are vines that come out of the ground and climb up my oak trees. They have sharp thorns. They are very hard to put out of the ground. They have a potato-like root. When I see new shoots emerging, I spray with Round-up but it does no good.

Answer from NGA
June 11, 1999


Those are often referred to as the "Devil's Shoestring"! Smilax is their more proper name. I have fought with them myself and found that herbicides are only partially effective. Digging out the tubers is the most effective control option, albeit a chore.

Another option is to cut the shoot off EVERY time they appear. This depletes the tubers of their stored energy. You see, every time they use stored reserves to grow another shoot, it is cut off before it has a chance to develop leaves and replenish the tuber.

Good luck in the war!

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