Avatar for tb582
Jun 4, 2020 5:34 AM CST
Sewell, NJ
Underneath my pine trees there's new sprouts of oriental bittersweet growing. Can someone recommended what I can spray (herbicide) to kill them and the roots BUT NOT harm the pine trees??
Avatar for porkpal
Jun 4, 2020 7:04 AM CST
Name: Porkpal
Richmond, TX (Zone 9a)
Cat Lover Charter ATP Member Keeper of Poultry I was one of the first 300 contributors to the plant database! Dog Lover Keeps Horses
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Glyphosate herbicides will kill only green material on which they are sprayed. They do not act through the soil. Always read and follow label instructions carefully.
Porkpal
Avatar for tb582
Jun 4, 2020 7:40 AM CST
Sewell, NJ
porkpal said:Glyphosate herbicides will kill only green material on which they are sprayed. They do not act through the soil.


Not sure that will work; it's my understanding it's gotta get down and kill the roots to be effective.
Avatar for MsDoe
Jun 4, 2020 8:02 AM CST
Southwest U.S. (Zone 7a)
You carefully spray it on the weed foliage ONLY. If necessary, screen other nearby plants to prevent overspray, it's likely to kill anything it hits. The plant itself transfers the chemical from the leaves to the roots. It doesn't go through the soil and cause damage, it works by being transported from the sprayed leaves down to the roots. Some formulations come with a cone-shaped applicator that make it easier to spot treat individual plants without getting nearby plants that you don't want to spray. I've also used sleeves made from plastic bags to contain the spray to only the plant I want to kill. (Mostly siberian elms that sprouted in with other plants.)
Use it carefully, read the label, and only get it on the leaves of plants you want to kill.
Avatar for tb582
Jun 4, 2020 12:27 PM CST
Sewell, NJ
Can you provide a link to the product you describe on amazon?
Avatar for porkpal
Jun 4, 2020 3:02 PM CST
Name: Porkpal
Richmond, TX (Zone 9a)
Cat Lover Charter ATP Member Keeper of Poultry I was one of the first 300 contributors to the plant database! Dog Lover Keeps Horses
Roses Plant Identifier Farmer Raises cows Celebrating Gardening: 2015 Garden Ideas: Level 2
The most common one is "Roundup" but there are many brands that contain glyphosate.
Porkpal
Avatar for WAMcCormick
Jun 4, 2020 4:00 PM CST
Bryan, TX
Just do an internet search for glyphosate or roundup. There is an abundance of information out there on it.

I am a firm believer in glyphosate when it is used properly. Follow label instructions. The plant takes it in through the leaves and sucks it down to the roots killing the entire plant without harming plants that were not sprayed.
If it takes a long time to grow, remember that if nobody plants it, nobody has it.
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Jun 5, 2020 1:37 AM CST
Name: Rick R.
Minneapolis, MN, USA zone 4
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If the new sprouts are from seed, then just pull them up by hand. If the "new" sprouts are from bittersweet plants already established, then you will need to let them grow, say at least 4 or 5 leaves, so there is enough plant surface area to take in the poison. It is likely that you will need to apply multiple applications. When it takes in the poison, it moves down into the roots, and when there is a lot of roots compared to the amount of leaves absorbing the poison, the poison gets distributed into the large root mass and concentration isn't high enough to kill, hence multiple applications. When you spray, the leaves will turn yellowish. If they turn back to green (and certainly if they start to grow), that will be your cue to spray again.
When the debate is lost, slander becomes the tool of the losers. - Socrates
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