Return to the California Gardening Forum | Post a Follow-Up

 o
Getting rid of St Augustine grass..

Posted by sharb 11 CA (My Page) on
Tue, May 15, 07 at 20:29

My small back yard is being invaded by St Augustine grass. Does anyone know how I can get rid of it without starting over with the lawn? I really dislike it. I now have marathon grass (mixed with invading St Augustine).

We did a remodel this past year and my yard was neglected, wasn't watered or cared for... I'm paying the price now. Everything else is coming back, but the lawn has adopted this new grass. I have considered putting new sod in the last couple of years, maybe I'll be forced to now...


Follow-Up Postings:

 o
RE: Getting rid of St Augustine grass..

  • Posted by jean001 z8aPortland, OR (My Page) on
    Wed, May 16, 07 at 2:15

Are you certain it's St. Augustine? I ask because kikuyugrass looks very similar and is far more aggressive than St.Augustine.

To tell the difference, the stems of the St. Augustine are round and slick whereas tems of kikuyu are flattened and slightly hairy.

Jean
who previously gardened for 30-some years in SoCal.


 o
RE: Getting rid of St Augustine grass..

  • Posted by dis_ z9 CA (My Page) on
    Wed, May 16, 07 at 14:36

I always thought it was St Augustine that I have. Went and looked. It's kikuyu. The stuff is evil. It clambers fences and six foot tall cactus. When I pull it up I end up yanking out six feet of runner. Can't stand the stuff.


 o
RE: Getting rid of St Augustine grass..

  • Posted by skrip z9/sun19/SoCal. (My Page) on
    Wed, May 16, 07 at 14:54

The best way to keep kikuyu out is to avoid introducing it in the first place. Use oats, millet or some similar temporary cover crop to stabilise bare ground until the native vegetation that was there originally can re-colonise the site. Avoid collecting manure or mulching materials from sites where it occurs. If you notice it becoming established, remove it quickly, before it has a chance to spread.

Kikuyu can be dug out, but this can be very laborious, unless it is growing under a thick mulch. In this case the runners grow along the surface, and are easy to pull up. It is very easy to kill with non-selective herbicide, or some grass-specific herbicides can be used to remove it from among native grasses, with minimal damage to the natives.


 o
RE: Getting rid of St Augustine grass..

Thank you for your responses. I'm assuming it is St. Augustine, but am not sure. I will look up some photos of both or maybe post a photo tomorrow. I pulled up quite a few runners today. Most were maybe around 6-8 inches long. It seems worse at the edges. The gardner no longer uses an edger, just a weed whacker... I'm thinking an edger would be better at keeping this from the edges.


 o
I think it's St Augustine

I just looked at some on line photographs of the two grasses. I think what I'm getting is St Augustine. Seems the St Augustine has a broader leaf blade. Mine is very broad. The kikuyugrass looks as if it has a narrower blade. Since it hasn't gotten to the whole yard, I might use Round Up on it for now before it takes over everything.
SharB


 o
RE: Getting rid of St Augustine grass..

  • Posted by skrip z9/sun19/SoCal. (My Page) on
    Thu, May 17, 07 at 9:59

Well, St. Augustine is not as bad as bermudagrass, which can go down into the soil several feet. St. Augustine is usually in top part of the soil, maybe a couple of inches deep. I would use round up, and pull what I can by hand. Once St. Augustine dries up, it is dead, doesnt re-grow like other grasses. Catch it now before it fills up your yard. It doesnt leave seeds or anything like that... once you pull with roots, that stolon is over.


 o
RE: Getting rid of St Augustine grass..

Thanks skrip. I will continue to pull out what I can and also use the Round Up. When we first landscaped this yard, in 1973, we put in hybred bermuda grass and I loved it. So short and soft and green. When we built the back porch, I wanted a more traditional look and went with Marathon. I did like the hybred bermuda a lot. I don't like the wide blades of the St. Augustine and the rough feel of it.

Thanks for the suggestions.
SharB


 o
RE: Getting rid of St Augustine grass..

  • Posted by hoovb z9 Southern CA (My Page) on
    Mon, May 21, 07 at 0:32

There's selective herbicides for lawns. I know one I used will kill St. Augustine while leaving the Fescue.


 o
RE: Getting rid of St Augustine grass..

I am certain I have St. Augustine coming up through my (less than 1 year old) Marathon II. How do I get rid of the St. Augy without damaging the sod?


 o
RE: Getting rid of St Augustine grass..

When we bought a previous house built in 1905 we had a front yard in common with our neighbor a 1902 model. Her lawn was St.Augustine and mine was blue grass. With no border between us it was impossible to contain her grass. A professional I consulted said a solid barrier 18 inches deep was needed to separate us. I dug a trench and poured concrete with a curb about 6 inches above the lawn. It was expensive but effective and did not improve neighborly relations. Al


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the California Gardening Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here