Timeline for Looking for confirmation: poison ivy or not?
Current License: CC BY-SA 4.0
12 events
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| Aug 15, 2018 at 10:56 | comment | added | Jurp | @Wayfaring - The formulation I used was straight, old-fashioned RoundUp - yeah, the "season long control" stuff must stay in the soil. Stormy. You're absolutely right about the crown - I hadn't thought about that. In that case, though, I'd expect the kill zone to be circular around the affected crown and not the drop itself (assuming that the drop hits an outer blade of the crown). Maybe I'm overthinking this... As of this writing, 3 months later, nothing - not even weeds - has grown in the "drop zone". | |
| Aug 15, 2018 at 5:59 | comment | added | stormy | Because a blade of grass is attached to clumps, usually. Just one drop on one leaf of a clump of grass will kill the entire clump. It is translocated to the roots so yes, putting a drop on one blade will kill the entire clump of grass. | |
| Aug 15, 2018 at 5:43 | comment | added | Wayfaring Stranger | @Jurp There are several formulations for Roundup. Many contain an additional herbicide that hits leaves fast, and has a longer life in ground than glyphosate itself. I'm not dashing out in the dark to see what the name of the stuff is. There's also a Roundup made specifically for poison ivy control. I've no idea what the extra kicker is in that version, nor do I know its half life in the ground. I buy the generic concentrate, with no extra active ingredients. It takes 4-5 days before you see it work, but it's effective as brand name, cheaper, and I don't have to look up what else is in it. | |
| Aug 15, 2018 at 1:56 | comment | added | Jurp | Oh yeah - glyphosate was max strength, properly diluted, according to directions. My dripping issue was NOT caused by straight glyphosate or anything careless like that. If you all think this should be an official question, I'll post it as such - just let me know. Thanks. | |
| Aug 15, 2018 at 1:55 | comment | added | Jurp | @ Stormy and others. Perhaps this should be a question... Earlier in the spring I dripped glyphosate from my sprayer onto my lawn. One drop per step - every three feet -- but the glyophosate killed 8" of grass per drop! I've also noticed that when an area is sprayed heavily, plants don't necessarily return to the area for 1-3 years. So - if the chemical isn't resident in the soil, and if it kills only on contact, HOW did it kill 8" of grass per drop, and why don't plants grow in heavily sprayed areas? Not trying to be a pain here - just really wanting to knonw the answers... | |
| Aug 15, 2018 at 1:31 | comment | added | stormy | 249 Million is what I've heard. This law suit is simply wrong. Out of all the dang pesticides that we homeowners have access, this one is a good one. Cancer. Makes me so very angry, when that dude was drinking fluoride all his life from tap water...THAT was far more likely to cause cancer than stupid glyphosate. | |
| Aug 15, 2018 at 0:48 | comment | added | Wayfaring Stranger | @stormy Some California jury just awarded $100 million or so over Roundup giving someone cancer. Juries usually contain neither chemists nor biochemists; the lawyers hate hard science types. As a chemist and biochemist, I've looked at the literature, and played with related compounds. I have the standard chemists hand washing fetish, but these are not very scary chemically. No matter what the jury says. - Darn tiny keypads! | |
| Aug 14, 2018 at 21:05 | comment | added | stormy | And this chemistry does not linger in the soil. It doesn't leach either. I am with you, I can simply pull up weeds. But this is no 'simple weed'...this as well as a few other weeds need some heavy handed control. Contact your Cooperative Extension Service. They might have 'programs' to help and definitely advice that fits your locale. | |
| Aug 14, 2018 at 21:02 | comment | added | stormy | @avp Glyphosate as I was taught is not one of the 'bad guys' in the world of pesticide chemistry. Wayfaring suggested paper towels to whet a few leaves and I wish I had thought of that! Smart. Treat glyphosate like bleach. Just one drop on the leaves of an herbaceous plant could kill it. One drop of bleach will ruin a lovely dress? We are talking about a gnarly plant. Most important thing of all is to NOT let them produce flowers, seed. Just cutting them off at the ground will slowly 'starve' these plants. Glyphosate is like a little ninja killing the plant from the inside. | |
| Aug 14, 2018 at 16:56 | comment | added | Wayfaring Stranger | In this case, it's chemical a vs chemical b. I find that a glyphosate wetted paper towel works well. | |
| Aug 14, 2018 at 15:05 | comment | added | avp | Thanks! My dad is pushing for the glyphosate, too, but I hate putting chemicals in my yard, and don't mind the effort of pulling up the plants (thus far, I seem to be one of the lucky ones who doesn't react to the oils - but I'm still wearing gloves as I do so!). I've never heard of someone eating the shoots - that's insane! | |
| Aug 13, 2018 at 20:08 | history | answered | stormy | CC BY-SA 4.0 |