Ask a Question forum: broadleaf weeds in daylilies and iris beds

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grasslady
Jul 18, 2013 10:42 AM CST
question about 2-4D in daylilies and iris. They are monocots are they not? so why does 2-4D affect them negatively? I have tons of some kind of broadleaf plant that is pervasive in my wooded garden and pulling them is possible, but incredibly time consuming. I've never heard of Snapshot so will have to check that out also. I've had good luck with Preem but it does have to be applied at least 3 times in the summer, (I live in midwest Wisconsin). Any chance the 24D will not kill my monocots?
Name: Hetty
Sunny Naples, Florida (Zone 10a)
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Dutchlady1
Jul 18, 2013 11:08 AM CST
Welcome! Grasslady! I am sure that one of our lily experts will have an answer for you.
Name: woofie
NE WA (Zone 5a)
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woofie
Jul 18, 2013 12:42 PM CST
For what it's worth, I found this comment on another website:
http://forums.gardenweb.com/forums/load/daylily/msg031754491...

Confidence is that feeling you have right before you do something really stupid.
Name: Juli
(Zone 5b)
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daylily
Jul 20, 2013 9:14 AM CST
I avoid spraying Roundup or 2-4-D around the daylilies during the times they are forming scapes or blooming, but after they are done, I have carefully blocked the daylilies with cardboard or tarps and sprayed along the bed edges. I would avoid using any sprays in the beds. It may not kill them, but my experience is that it can/will distort or ruin the bloom.

I am a fan of Snapshot. I find it works a little better than Preen. The key to either is getting it down before the weed seeds germinate, and then watering it in as per directions.

It depends where you live how often you need to apply pre emergent, and when. Your local master gardeners should be able to give you guidance on that, or a trusted employee at a local nursery. Where I live, I should apply twice per yer, but often I only manage once. This year I didn't mange to get any Snspshot down, and boy, can I tell a difference. Crying What a mess!

If you must use killer in the beds, try a sponge paint brush or disposable cotton glove to apply instead of spraying, and only apply to one weed at a time ( such as to poison ivy). Pull daylily foliage back, apply killer, and try to keep daylily foliage from touching where you applied until it is dry.

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