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Spray to kill elephant ears?

Posted on 4/16/20 at 10:07 am
Posted by NOLAGT
Over there
Member since Dec 2012
13783 posts
Posted on 4/16/20 at 10:07 am
So when I built my pond I was given some banana plant trunks for free. Just the trunk, everything cut off of them...so I thought.

Over the course of a cpl years these pita elephant ears (I believe the invasive kind) popped up all over. I removed the bananas and got a good bit of the elephant ears out but there are still a bunch intertwined in some rock work and plants.

Is there anything I can spray them with to kill. Roundup seams to beed off and just damage the leaf. I can’t pull them and get all the roots in these areas.

I’d rather not kill surrounding vegetation...but if they die they die. These things get out of control...in the past I saw one coming up in the lawn next to this garden area.



Posted by Alleman
St. George
Member since Apr 2013
741 posts
Posted on 4/16/20 at 10:31 am to
The leaves are hydrophobic so simply spraying with an herbicide won't work as the herbicide won't "stick" to the leaves.

I had a huge infestation and ended up having to use a rag and wipe/rub a mixture of Round Up and Dawn (surficant)on each leaf in order to have the herbicide stick to the leaves. It was a PITA and took two applications to knock out the elephant ears.

They are starting to return a couple of years later and I don't know if this is a new infestation or the old roots are resprouting.
Posted by deeprig9
Unincorporated Ozora
Member since Sep 2012
70277 posts
Posted on 4/16/20 at 10:33 am to
Mix dish detergent (such as Dawn) in your sprayer, the roundup will then stick to the leaves.


In other news... your shadow in Pic #1 makes you look like the Zodiac Killer.
This post was edited on 4/16/20 at 10:35 am
Posted by CrawDude
Baton Rouge
Member since Apr 2019
5600 posts
Posted on 4/16/20 at 10:48 am to
As others have recommended use glyphosate with a surfactant (spreader-sticker) added to help it penetrate the waxy leaf. If needed use multiple applications, enough herbicide must be translocated to the tuber to kill it - that often requires more than a single application. LINK
Posted by NOLAGT
Over there
Member since Dec 2012
13783 posts
Posted on 4/16/20 at 10:57 am to
edit pic for appreciation of the info. I’m about to go zodiac on them plants.

Just a few drops of dawn per gallon or a certain amount? Just enough to make it foamy?



This post was edited on 4/16/20 at 10:58 am
Posted by deeprig9
Unincorporated Ozora
Member since Sep 2012
70277 posts
Posted on 4/16/20 at 10:59 am to
A few squirts, just to make it foamy. I don't measure the soap.
Posted by NOLAGT
Over there
Member since Dec 2012
13783 posts
Posted on 4/16/20 at 12:37 pm to
Thanks!
Posted by AlxTgr
Kyre Banorg
Member since Oct 2003
84264 posts
Posted on 4/16/20 at 1:16 pm to
Wish I had those around my koi pond.
Posted by NOLAGT
Over there
Member since Dec 2012
13783 posts
Posted on 4/16/20 at 1:35 pm to
I do like them and at first, was glad to see them pop up.....but it quickly became an issue. They grow everywhere...through shrubs...in the lawn...choking everything out. If I could control them id leave them because it would look great around the waterfall...but not these nope.

I do have some other ones (forget the name) but they are an upright facing elephant ear and get much bigger but way less aggressive with there spread. Ill snap a pic if you want.
Posted by NOLAGT
Over there
Member since Dec 2012
13783 posts
Posted on 4/16/20 at 2:24 pm to
These guys are cool. If they didn’t die back in the winter or maybe if I fertilize more they would get as y’all as the fence I think.

Posted by BottomlandBrew
Member since Aug 2010
28386 posts
Posted on 4/16/20 at 2:51 pm to
So different type of elephant ears. Alocasia macrophyla vs. Colocasia esculenta. The colocasia stems meet the leaves at 90 degreess, like in your pond. They're the PITA kind and highly invasive. Alocasia leaves meet the stems at 180 degrees and are cool, for the most part.
Posted by joeleblanc
Member since Jan 2012
4114 posts
Posted on 4/16/20 at 3:11 pm to
Eraser and 24-D
Posted by cgrand
HAMMOND
Member since Oct 2009
43189 posts
Posted on 4/16/20 at 3:16 pm to
yeah the ones you have in your pond are the "wild" gen-pop of elephant ears, a lot of time they get transplanted into yards when people dig up irises or similar out of the marsh. those things suck and are as stubborn to get rid of as anything
Posted by 91TIGER
Lafayette
Member since Aug 2006
18843 posts
Posted on 4/16/20 at 6:35 pm to
quote:

colocasia stems meet the leaves at 90 degreess, like in your pond. They're the PITA kind and highly invasive. Alocasia leaves meet the stems at 180 degrees and are cool



Correct, don't plant the colocasia in your yard !
Posted by NOLAGT
Over there
Member since Dec 2012
13783 posts
Posted on 4/16/20 at 7:31 pm to
I didn’t have to plant them in the yard...they migrated there. I haven’t seen them much in there but they are hanging around the waterfall and around the edge. I am going to nuke them with one of these suggestions. I’m sure I’ll have collateral damage but it’s better than the other option.
Posted by Capt ST
High Plains
Member since Aug 2011
13330 posts
Posted on 4/16/20 at 9:03 pm to
I use a mix of 2-4D and Glysophate with surfactant added to spray our duck ponds. I mix it hot and it will knock those things down overnight
Posted by Bill Parker?
Member since Jan 2013
4979 posts
Posted on 4/16/20 at 11:32 pm to
Lot of good answers in the previous posts. I'm no expert, but when I have a problem weed or plant, I smoke it with Diquat. It's an aquatic weed killer. A botanist friend introduced me to it.

I refer to it as "death in a bottle."
Posted by gumbo2176
Member since May 2018
17970 posts
Posted on 4/17/20 at 11:19 am to
Another trick is to cut it back to the ground EVERY time you see new growth. No photosynthesis and the roots eventually die.

That is how I got rid of banana plants, hidden ginger and elephant ears in my yard. I tried spraying them, digging them out, etc. and they'd keep coming back. I spent the better part of a year cutting them back every time I saw green coming up and they died. That was over 27 years ago now and they've never come back.
Posted by NOLAGT
Over there
Member since Dec 2012
13783 posts
Posted on 4/17/20 at 12:29 pm to
Interesting. I may try that in the spots they are growing out of desirable plants.
Posted by tigerinthebueche
Member since Oct 2010
36958 posts
Posted on 4/17/20 at 1:19 pm to
diesel
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