How can I eradicate bittersweet vine?
Last year I followed the directions of cutting the vines close to the ground so that the vines climbing trees, shrubs and fence would die off. Then I dug and pulled as much root as possible and painstakingly painted the exposed root ends with an herbicide. This process has proven unsuccessful as bittersweet continues to flourish in my yard. There must be an easier way to kill this invasive vine.
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It is going to take more than one season to eradicate the bittersweet from your property. There is probably not an easier way than what you have already done. You are doing what you need to do to begin the process and you will have to keep working at it each year until it's gone. It is frustrating when we have evasive plants that we want to get rid of and they keep coming back. Keep working at it!
https://homeguides.sfgate.com/rid-oriental-bittersweet-83579.html
Round-Up.......cut if off immediately put it on open end of stalk--plants heal within seconds so do it quickly or it will not get absorbed;get 2 gallon pump sprayer(not a back pack don't risk leaking solution on your back) buy concentrate Round-Up add food coloring to it(so you can see where you are spraying it). Mix it 1/2 concentrate & 1/2 water. After stalks are treated,as soon as you see new leaves growing on any stems spray them heavily with the Round-Up. It is absorbed into leaves them stems then kills root systems. Round-Up works best when plant is in vigorous growth after being cut off & new leaves are emerging.Keep checking for new growth and spray thru out growing season.Depending how big the area is it may take a few weeks to get it all. Put spray nozzle down onto leaves when spraying & do not spray in wind or breezy conditions;use gloves;do not walk or get in wet solution. Follow the safety instructions on container they are & have always been on the container for a reason. There are few times when such drastic measures are needed, woody stemmed & invasive species of plants just need a chemical to irradicate them,only use it for this then stop using it. American Bittersweet is native to N. America. Chinese variety on invasive plant list