Ask a Question forum: Roundup Use

Page 1 of 5 • 1 2 3 4 5
Views: 3337, Replies: 99 » Jump to the end
Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
Image
AnnaZ
Mar 17, 2017 8:23 PM CST
Ok, I do NOT need anyone here to blast me on my thoughts of using Roundup. I have a question, and if you have an honest answer, thank you. If you are going to berate me on use of Roundup, well, please don't.

I have quite a problem with that wretched oxalis in many of my large pots. I know that if you do not pull out the whole plant with ALL the roots, they will come back. What I am wanting to know is..............if I cover or somehow make my "main" plant in the pot not able to have contact with the Roundup, can I safely (?? LOL) spritz the oxalis in the pots and kill it. If the Roundup doesn't touch my wanted plant, it should be safe............correct? Roundup is a contact herbicide, so if it doesn't come in contact with anything other than the crap I'm trying to eradicate I am assuming I can do it. I asked the Spousal Unit and he said "I would think so, but I'm not gonna tell ya to do it". We farmed for 40 years and we used Roundup, but he's not going to stick his neck out on this one.

Thanks.
Name: Carol Roberts
Huntington Beach, CA (Zone 10b)
Sunset 24
Container Gardener Foliage Fan Annuals Dog Lover
Image
CarolHB
Mar 17, 2017 8:34 PM CST
The theory of Roundup, as I have done a bit of research, is that you get it on the leaves of the unwanted plant, it travels through the plant system to the roots and kills it dead. Unless its asparagus fern. So, yeah, if you can be sure that you don't touch a drop of roundup on the GOOD plants leaves or stems, you could give it a try. I don't know how long it would take to tell if you messed up and killed everything in there. I've got a lot of that oxalis stuff too, and there's one planter that I'm just going to dismantle completely and try to replant the good stuff without the gunk. Probably won't work, but will keep me off the streets.
Can't complain too loud about how the ball bounces when I'm the one who dropped it.
Name: Sally
central Maryland
Seriously addicted to kettle chips.
Charter ATP Member Native Plants and Wildflowers Region: Mid-Atlantic Composter Region: Maryland Birds
Cat Lover Dog Lover Region: United States of America
Image
sallyg
Mar 17, 2017 8:38 PM CST
I agree, it should work out as you hope.
..come into the peace of wild things..-Wendell Berry
Life is a buffet (anon)
Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
Image
AnnaZ
Mar 17, 2017 8:51 PM CST
Carol, these are big plants in the greenhouse. I can only pull so much of the damn stuff, and when you feel the stem snap just below the soil line, well, you know they live to plague you another day or 3. I know when the SU sprays fence lines, etc. if it is done in the morning you can tell by late afternoon that they're going to be history. I think they say that if you spray (like a field) you should wait a week before you plant anything. But since I'm not wanting to "plant" anything, just "weed", I really saw no reason why it wouldn't work if I was REALLY, REALLY careful with my "good" plant in the pot.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Mar 17, 2017 8:54 PM CST
I have killed weeds in pots or near other plants with Roundup without killing the wanted plant by using a shield between the two. Leave the shield (cardboard, plastic bag, whatever) in place until the Roundup dries.

The minute the Roundup is dried, it is no longer poisonous.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org
[Last edited by DaisyI - Mar 17, 2017 8:56 PM (+)]
Give a thumbs up | Quote | Post #1392229 (5)
Name: Carol Roberts
Huntington Beach, CA (Zone 10b)
Sunset 24
Container Gardener Foliage Fan Annuals Dog Lover
Image
CarolHB
Mar 17, 2017 8:55 PM CST
Well, it should work. Roundup is a systemic, so once its in the system of one plant I don't see how it could break loose and just move into another plant's system. Maybe wall off the good plant with aluminium foil or something impervious, and then have at 'em.
Can't complain too loud about how the ball bounces when I'm the one who dropped it.
Name: Sandy B.
Ford River, Michigan UP (Zone 4b)
(Zone 4b-maybe 5a)
Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Sages Million Pollinator Garden Challenge Seed Starter Vegetable Grower
Greenhouse Region: United States of America Region: Michigan Enjoys or suffers cold winters Butterflies Birds
Image
Weedwhacker
Mar 17, 2017 8:56 PM CST
Anna -- you might find it easier (maybe safer?) to "paint" the Roundup solution on the oxalis with a brush. But otherwise, if you can cover the desirable plant well, there should be no problem; my understanding is that Roundup doesn't have "soil activity," meaning that it only affects a plant that is directly touched. In fact, when sprayed on weeds growing around woody shrubs, as long as it doesn't get on the leaves of the shrubs it doesn't really hurt anything if it gets on the branches.

I've used Roundup on weeds and shortly thereafter (like a few days) planted seedlings, without any noticeable effect on my plants.

Just don't do what my father-in-law once did and mistakenly use Weed-n-Feed in place of fertilizer Hilarious!
โ€œThink occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer /
Cubits.org - A Universe of Communities[/I] / Share your recipes: Favorite Recipes A-Z cubit
C/F temp conversion / NGA Member Map
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Mar 17, 2017 9:00 PM CST
I sprayed year-old pre-mixed Roundup this morning. We had our first 80 degree day and then the wind came up. The weeds look dead this evening. Fastest Roundup ever! Do you think its like drugs - it gets old and gets stronger?
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org
Name: Sandy B.
Ford River, Michigan UP (Zone 4b)
(Zone 4b-maybe 5a)
Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Sages Million Pollinator Garden Challenge Seed Starter Vegetable Grower
Greenhouse Region: United States of America Region: Michigan Enjoys or suffers cold winters Butterflies Birds
Image
Weedwhacker
Mar 17, 2017 9:03 PM CST
I know it definitely works better in warm temperatures!

And I've also used stuff that was mixed up quite a while back, and although I can't say if it gets stronger, it certainly doesn't seem to lose potency.
โ€œThink occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer /
Cubits.org - A Universe of Communities[/I] / Share your recipes: Favorite Recipes A-Z cubit
C/F temp conversion / NGA Member Map
Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
Image
AnnaZ
Mar 17, 2017 9:06 PM CST
I think they always recommended that temps be at least 50 or above for maximum effect. And it should be on the plant for at least an hour before a rain. Not much chance of rain in the greenhouse, or wind drift. Rolling on the floor laughing
Name: Rj
Just S of the twin cities of M (Zone 4b)
Garden Ideas: Level 1 Plant Identifier Million Pollinator Garden Challenge
Image
crawgarden
Mar 17, 2017 9:09 PM CST
Ive used a foam brush to paint roundup selectively on unwanted plants, it seems to work.
Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed.
[Last edited by crawgarden - Mar 17, 2017 9:10 PM (+)]
Give a thumbs up | Quote | Post #1392246 (11)
Name: Porkpal
Richmond, TX
Charter ATP Member I was one of the first 300 contributors to the plant database! Keeper of Poultry Farmer Roses Raises cows
Garden Ideas: Level 2 Celebrating Gardening: 2015 Plant Identifier
porkpal
Mar 17, 2017 9:35 PM CST
I have used a Roundup on paint roller to kill weeds between rows of vegetables and around roses. The faster the weeds are growing the quicker they croak.

I have heard that if the soil is very wet, there could be some root-to-root transfer, but I've never experienced it.
Porkpal
[Last edited by porkpal - Mar 17, 2017 9:37 PM (+)]
Give a thumbs up | Quote | Post #1392262 (12)
Name: Karen
NM (Zone 7b)
Region: New Mexico Critters Allowed Region: Arizona Xeriscape Greenhouse Annuals
Cactus and Succulents Bromeliad Adeniums Orchids Tropicals Plumerias
Image
plantmanager
Mar 17, 2017 10:30 PM CST
I have used a paintbrush to put round up on weeds only. It worked perfectly. Just do it when there is no wind and your pots should be clear of weeds very quickly.
Handcrafted Coastal Inspired Art SeaMosaics!
Name: Jai or Jack
WV (Zone 6b)
Om shanti om.
Container Gardener Region: West Virginia Multi-Region Gardener Garden Photography Amaryllis Zinnias
Gardens in Buckets Annuals Houseplants Plant and/or Seed Trader Birds Garden Ideas: Level 1
Image
Jai_Ganesha
Mar 17, 2017 10:38 PM CST
DaisyI said:I sprayed year-old pre-mixed Roundup this morning. We had our first 80 degree day and then the wind came up. The weeds look dead this evening. Fastest Roundup ever! Do you think its like drugs - it gets old and gets stronger?


It diminishes over time, but how much depends on how it is stored.

Someone else who commented that it works better in warmer temperatures is also right--this is because plant metabolism (and everything's metabolism, basically) speeds up in warmer temperature so they soak up more of it and do so faster. Even a 10 degree difference (70ยบ vs 80ยบ) can make a big difference.
Keep going!
Name: Bob
Vernon N.J. (Zone 6a)
Charter ATP Member Plant Database Moderator I was one of the first 300 contributors to the plant database! Forum moderator Heucheras Echinacea
Hellebores The WITWIT Badge Dog Lover Lover of wildlife (Black bear badge) Region: New Jersey Celebrating Gardening: 2015
Image
NJBob
Mar 18, 2017 9:03 PM CST
They also have a new product called Roundup precision Gel.
http://www.roundup.com/smg/goA...
For the spray I have used the bottom of a shoe box with one of the ends taken off as a shield.
Name: Tiffany purpleinopp
Opp, AL ๐ŸŒต๐ŸŒทโš˜๐ŸŒน๐ŸŒป (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
Tropicals Butterflies Garden Sages Cactus and Succulents Plant Identifier Million Pollinator Garden Challenge
Image
purpleinopp
Mar 19, 2017 6:21 AM CST
What kind of Oxalis do you have?
๐Ÿ‘€๐Ÿ˜๐Ÿ˜‚ - SMILE! -โ˜บ๐Ÿ˜Žโ˜ปโ˜ฎ๐Ÿ‘ŒโœŒโˆžโ˜ฏ๐Ÿฃ๐Ÿฆ๐Ÿ”๐Ÿ๐Ÿฏ๐Ÿพ
The less I interfere, the more balance mother nature provides.
๐Ÿ‘’๐ŸŽ„๐Ÿ‘ฃ๐Ÿก๐Ÿƒ๐Ÿ‚๐ŸŒพ๐ŸŒฟ๐Ÿโฆโง ๐Ÿƒ๐Ÿ๐Ÿ‚๐ŸŒพ๐ŸŒป๐ŸŒธ๐ŸŒผ๐ŸŒน๐ŸŒฝโ€โ˜€๐ŸŒบ
โ˜•๐Ÿ‘“ The only way to succeed is to try.
Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
Image
AnnaZ
Mar 19, 2017 6:47 AM CST
The crap that grows in every freekin' pot....................has little yellow flowers. Hate, hate, hate it............
Name: Carol
Santa Ana, ca
Sunset zone 22, USDA zone 10 A.
Charter ATP Member Hummingbirder Lover of wildlife (Black bear badge) Orchids Region: California Plant Identifier
Image
ctcarol
Mar 19, 2017 6:09 PM CST
Even worse in the lawn! I let the pink and yellow bulb type bloom in the flower beds for the bees, but that creeping oxalis seems to come with every plant you buy from a nursery.
Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
Image
AnnaZ
Mar 19, 2017 6:16 PM CST
I think I got it from plants I brought in to overwinter the first year. I didn't know anything about it, but it sure took off in that nice, tropical environment! Sticking tongue out
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Mar 19, 2017 6:27 PM CST
I have some kind of oxalis in my greenhouse too. It is creeping and has yellow flowers. (It should be described as galloping) Luckily, its in the cactus pots; they are impervious to Roundup because of their waxy bodies.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org

Page 1 of 5 • 1 2 3 4 5

« Garden.org Homepage
« Back to the top
« Forums List
« Ask a Question forum
Only the members of the Members group may reply to this thread.

Member Login:

Username:

Password:

[ Join now ]

Today's site banner is by plantmanager and is called "Spinystar (Escobaria vivipara)"