Wild Iris

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7 years 5 months ago #527202 by Harbourlights
Wild Iris was created by Harbourlights
Hi Team...

Just wondering if someone out there has surplus chemical to spray wild iris with or is there a better way please, I have tried Wrightsons, Farmlands and the like....I am not having much luck. We have about two acres and about ninety percent is wild iris. When I spray, I would lie to keep what grass we have please.

Many thanks

Rex

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7 years 5 months ago #527203 by Stikkibeek
Replied by Stikkibeek on topic Wild Iris
Do you mean the one commonly called Stinking Iris? I suspect though the treatment would be the same. For stinking Iris, remove all the orange seed heads, and cut the plant off to expose the stump. Paint or spray the stump while still freshly cut. It may need a penetrant added. You can also inject directly into the stump with undiluted glyphosate which should help avoid killing areas of grass.This iris is toxic, but is carried by birds, hence the importance of removing the seed capsules. You will need to keep at it over several growing seasons as there will be a seed bank of viable seeds just waiting to germinate.

Did you know, that what you thought I said, was not what I meant :S

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7 years 5 months ago #527204 by kai
Replied by kai on topic Wild Iris
round up will do it, but you will have to do it twice.

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7 years 5 months ago #527209 by LongRidge
Replied by LongRidge on topic Wild Iris
Glyphosate (in Round-Up) will kill everything. I would try Grazon.

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7 years 5 months ago #527210 by Rokker
Replied by Rokker on topic Wild Iris
Agree with LongRidge. Worth a try with Grazon or other selective broadleaf herbicide first. But if 90% of your pasture is affected it might be just as easy to use roundup, kill everything off, plough your soil and resow with new grass.

Do NOT cross this paddock! ... Unless you can do it in 9 seconds, 'cos the bull can do it in 10!

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7 years 5 months ago #527212 by muri
Replied by muri on topic Wild Iris
I would suggest if you want to target a specific weed that you go to your local authority and ask them what is the best spray to use to manage the specific problem that you have. That way you get the best information to help with this or any other weed, without wasting money on sprays that may or may not work
If you are in the Waikato, where this is particularly predominant, you should get really useful information from the pest management section of council

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7 years 5 months ago #527216 by Cigar
Replied by Cigar on topic Wild Iris
It isn't listed on the Novachem website, not as wild or Stinking iris anyway. The weedbusters website says glyphosate (e.g. Roundup) or triclopyr (e.g. Grazon) for stinking iris. As others have said, glyphosate will kill everything, triclopyr won't kill the grass

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7 years 5 months ago #527217 by muri
Replied by muri on topic Wild Iris
the stinking yellow iris, has pale yellowflowers and is called foetidissima
there is a more invasive semi-aquatic type that grows primarily in the waikato as I understand it - pseudocorus
So before you start spraying and it is best to identify which of the iris you have growing and for it to
cover such a large area I rather suspect the second rather than the first?
my experience of foetidissima is that it pops up all over the place, is easily dug out and is pesky and pesty but I would not call it invasive as it is easily got rid of but that mean I only have a limited understanding of what invasiveness means

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7 years 5 months ago - 7 years 5 months ago #527242 by bb
Replied by bb on topic Wild Iris
I am battling some kind of wild iris too... ours has purpley blue flowers... not orange... so which is it? And it has taken over an entire paddock in a year... I would call that invasive :( ?
Last edit: 7 years 5 months ago by bb.

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7 years 5 months ago #527281 by muri
Replied by muri on topic Wild Iris

bb wrote: I am battling some kind of wild iris too... ours has purpley blue flowers... not orange... so which is it? And it has taken over an entire paddock in a year... I would call that invasive :( ?


Could you photograph the flower for identification purposes, was not aware of an invaisive blue iris

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7 years 5 months ago - 7 years 5 months ago #527421 by Runamuck
Replied by Runamuck on topic Wild Iris
bb it sounds like you might have Arisea which is a form of wild iris - we have it too. Whilst it's quite pretty, it does take over quite quickly.
Check out this link for how to manage it .....

www.weedbusters.org.nz/weed-information/aristea-ecklonii/59/

:)
Last edit: 7 years 5 months ago by Runamuck.
The following user(s) said Thank You: bb

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7 years 5 months ago #527430 by Stikkibeek
Replied by Stikkibeek on topic Wild Iris
Sigh! That looks very pretty. Seems yet another City-ite that has escaped into the country :dry:

Did you know, that what you thought I said, was not what I meant :S

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7 years 5 months ago #527434 by ddonalds
Replied by ddonalds on topic Wild Iris
metsulfuron-methyl

Meturon from Agpro will knock it back. Takes about 8 weeks to brown off

Escort by DuPont is a really old one that also is based on metsulfuron-methyl but costs a fortune.

DD

DD

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7 years 5 months ago #527467 by bb
Replied by bb on topic Wild Iris
Thank you Runamuck, yes that's exactly the one :dry:
ddonalds, we did get some form of metsulfuron-methyl, can't remember name/brand, I do remember it was horrendously expensive... then my husband reckoned it was too toxic to spray over a large area, considered getting a pro in to do it, then I heard what it was going to cost :blink: .... so in the meantime it has thrived and taken over the paddock! oops... Oh well, I've put the goats in there for now, just to knock it back a bit and eat up all those flowerheads before they multiply again! I love my little weedeaters :) must deal to it properly soon though.

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7 years 5 months ago #527541 by stephclark
Replied by stephclark on topic Wild Iris
thanks runamuck.. I used to get this all over my dressage arena.. didn't have clue what it was or where it came from... roundup ..that fixed it

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