Evening Primrose

organic_kitten(8)March 20, 2013

Such an invasive weed. Yes, it is pretty, but so invasive. any ideas how to kill it?

Thank you for reporting this comment. Undo
Tiffany, purpleinopp GardenWeb, Z8b Opp, AL(8B AL)

How big of an area are you talking about?

    Bookmark   March 21, 2013 at 11:35AM
Thank you for reporting this comment. Undo

Proper turf management is important for biennial broadleaf weed control. Maintain a dense, actively growing turf through proper mowing, fertilizing, and watering practices. Mow at the proper height for your selected adapted turfgrass. Coring and traffic control reduce compaction and encourage desirable turfgrass competition. It is best to control this biennial broadleaf weed in spring or fall, if actively growing at these times.

Chemical control of such weed is by using Manor (metsulfuron), Plateau (imazapic), and Spotlight (fluroxypyr) will control this winter annual or biennial weed.

    Bookmark   March 21, 2013 at 11:56PM
Thank you for reporting this comment. Undo
Tiffany, purpleinopp GardenWeb, Z8b Opp, AL(8B AL)

I doubt someone going by the handle "organic kitten" is looking for names of poisonous chemicals.

A patch of nothing but this could be smothered with newspaper or cardboard. In the lawn, mowing should prevent it from making seeds. In a flower bed, if tangled into desirable plants, it may be necessary to remove the desired plants, smother/pull/dig the EPR, then replant. Not sure what kitten is dealing with.

    Bookmark   March 22, 2013 at 9:33AM
Thank you for reporting this comment. Undo

I am dealing with the things in an iris bed of all things. I am pulling as fast as I can, but very time I think I have it all, I wind up seeing the stinking thing has evaded me by sneaking its tendrils around and underground. My iris bed is fairly large, but the weed is pretty much limited to one half of it. I am quite concerned, because it has escaped the iris bed and begun to encroach on some daylilies.

Thanks so much, both of you.

    Bookmark   March 24, 2013 at 5:51PM
Thank you for reporting this comment. Undo

Tendrils? Escaped? I don't think you're dealing with evening primrose, if you can post a picture someone can identify it.

    Bookmark   March 24, 2013 at 7:09PM
Thank you for reporting this comment. Undo

Here is a picture of it last year when it has come into the roses. I think it is actually called Texas Evening Primrose. A very invasive uninvited guest in my garden.


    Bookmark   March 24, 2013 at 11:00PM
Thank you for reporting this comment. Undo
hortster(6a, southcentral KS)

I had planted Mexican evening primrose, Oenothera berlandieri âÂÂSiskiyouâ that looks very similar. My perennial area is bare soil, but cultivated (vs. mulched). That stuff went crazy! But, I noticed that it wouldn't invade the adjacent fescue turf or a small adjacent area that WAS mulched. My suggestion is to apply a good 3" or so of mulch and see if the "invasion" decreases. I gradually hoed the primrose out completely, never giving it a chance to bloom before seedling removal. Pretty while in bloom but truly a PITA.

    Bookmark   March 25, 2013 at 11:09AM
Thank you for reporting this comment. Undo

Thanks so much! I have noticed that the areas I have thickly mulched don't seem to be hosting so much of this spreader. I will have to dig up the iris where it has invaded rather thickly in order to kill it, but it is time to do that anyway, so I will do so after bloom, them mulch the dickens out of the area. I am continuing to pull it up as I find it in an effort to keep it from profiting from photosynthesis.

    Bookmark   March 25, 2013 at 6:53PM
Thank you for reporting this comment. Undo

Thanks for posting the pic Kay, when you wrote Evening Primrose I just automatically thought Oenothera biennis and just completely forgot about the myriad other weedy species in this genus. I battled O. missouriensis briefly many years ago, beautiful flowers but I could tell right away what an agressive thug it wanted to be so I took it out the first autumn. The next spring it came back like I hadn't even touched it! There was a Euphorbia right beside it which was also trying to take over the world, I ended up demolishing that part of the garden and digging about a foot down to get out all of the roots, then digging both of them out whenever they sprouted back up. That pretty much finished off the Oenothera.

Oh yeah, the Euphorbia still pops up from time to time.

    Bookmark   March 26, 2013 at 11:34PM
Thank you for reporting this comment. Undo

Jeanne, to be truthful I thought I had killed it five years ago when it first came to live here. Like you, I dug up the entire area and pulled out myriad roots etc. Then planted iris.

I am paying for last year when I did very little gardening, so it is at least triple this year. I found it in a new area, and so have been weeding this morning which will be followed by Preen (fat chance that will help) and deep mulch which will help.

Since you are still battling it, I know it will be around for a long long time.

I had a battle with passion flower a few years ago, which hasn't shown up since. That was a job, but at least you can find all of the roots, not like this one.

Thanks you for the help and the info.

    Bookmark   March 28, 2013 at 1:58PM
Sign Up to comment
More Discussions
Neglected Yard
I moved into a house last winter and the yard seems...
Black Medic (Medicago lupulina)
Black medic was growing rampant in my garden. I used...
Bleach & Poison Ivy
A few days ago I did a search of the Weeds Forum to...
Can you help me identify this weed?
It is growing in Atlanta, Georgia.
Sponsored Products
Pivoting Soap Dispenser
$12.99 | Dot & Bo
Signature Lazy Daisy Lamp - Buttercup Lily Style Glass with Black hardware
Funston Fire & Ice Chest - SHIFT_DESIGN
$750.00 | HORNE
Source Outdoor King Collection All Weather Wicker Outdoor Conversation Set Multi
Imperial Cat Holiday Kitten Kit Gift Set - 01173H
$19.99 | Hayneedle
Hinkley Lighting Hardy Island Matte Bronze LED Outdoor Wall Light
$85.00 | LuxeDecor
Soft Tip Bottle Brushes - Set of Three
$7.99 | zulily
Safavieh Indoor/Outdoor Area Rug: Safavieh Rugs Heritage Blue/Gold 3 ft. 6 in.
$84.97 | Home Depot
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™