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Roundup

R

Russ from MN

Well-known Member
Location
Bemidji MN
Today I cut some Tag-alder brush and sprayed the stumps with Roundup, regular 3oz per gal, commercial strength Roundup. Is this strong enough to kill the roots, I have heard about spraying stumps, but unsure of the concentration? Thanks!
 
roundup isnt goin to kill the roots at all. you will need to put tordon on the stump. the brush i use grazon which has tordon in it.
it isnt cheap but it works
johndeeregene
 
Russ, Roundup Is Not a Brush, (Woody) Killer. If By chance it does it is a rarity! Grazon + Dsl + Color Dye marker to tell you where you have been. may be a better option! Hope this helps.
Later,
John A.
 
Russ, The Ratio I use is, 1:4, 1 gal Grazon, 4 gal of Dsl, and a good tea cup of Red Dye marker in a 5 gal jug. and pour it into a 3 gal sprayer and use as needed, on fresh cut stumps, or slash method on ruff barks trees, and a band around the trunk on smooth bark varieties
Later,
John A.
 
Roundup will kill stumps when painted on, at a mixture rate of 20% active ingredient, or higher, immediately after cutting the stump, not later that 20 minutes. Look at the label of the container you use, roundup is sold in so many dilutions, these days, it's hard to tell what you have, without looking at the label!
 
I've had good luck painting Roundup on a fresh-cut stump, undiluted, right out of the jug, just like the label says. Dave sez within 20 minutes, but I thought the label sez 5 minutes, regardless, it's right on the label. I take the tip of my chainsaw and make a couple of shallow notches to help hold the liquid if the stump cut isn't level. I always buy the strongest formula of Roundup. There's several choices, and they can be misleading if you don't read carefully.

You can also use Crossbow, again, mixed as the label sez. I like it better than the Roundup, but can't say that it works better.
 
I have used generic glyphosate to kill elm stumps and they never re-sprouted. Have also used Tordon on woody shrubs. According to a work sheet I have from the USDA willow can be controlled satisfactorily with Triclopyr (Garlon 3A) Picloram (Tordon or Pathway) Imazapyr (Chopper, Stalker or Aesenal) by painting the stump immediately after cutting. For oil based applications use Gaelon 4, Chopper or Stalker or 2,4,D + 2,4 DP (Patron 170.) You only need to paint the outer inch or so, not the entire stump.

Larry
 
You have received a lot of replies. All of them most likely work. The roundup with the purple cap is very expensive. Some of the other products listed are probably cheaper and does the same thing.

A stump I want to kill I will cut the tree down in the spring or summer, and leave a 16 inch stump. Come fall (October)I will go out and cut the stump off and put a 50/50 mixture of the round up with the purple cap and diesel fuel. The park service uses antifreeze and roundup 50/50 in the fall and into winter on their buck thorn.

In the fall most ,if not all plants sent to the roots everything they suck in.
 

I use roundup at 20% rate drizzled or painted on freshly cut stumps and it kills em.
I ahave also sprayed all the sprouts on a stump with 20% roundup and they all die and do not come back.

I drizzle roundup on the cut end of large poision ivy vies and they do not come back
 
I have painted the "stumps" of many kinds of plants with straight glyphoshate, and none have ever re-sprouted. Holly is especially difficult, so I cut off the bush, painted it, covered the painted stump with some Saran-wrap, and covered it with dirt. It never sprouted back.

Learned the technique from an 85 year old woman- saw her in a blackberry patch, with clippers in one hand and a cup in the other. She'd clip a vine, then grab the vine with the clippers and dip the cut end in the cup (which held straight Roundup). She said (with a laugh) "It really works. And it's a good thing it does, because at my age, it was about as hard a work as I can manage". Have tried it on various plants, and it really does work.
 
I think straight Roundup will kill the roots, at least on brush- don't know about trees, never tried them. I've done a variety of brush, and have never had any grow back.
 
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