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txadam
02-07-2009, 10:57 AM
My St. Augustine lawn is getting overrun by all these damn weeds. I do not know what to do to get rid of this. I pretty much cant see anymore grass.

Some back story. After Hurricane Ike, our fence was destroyed and knocked down. It was down for several weeks since we were behind on getting it fixed. Behind our house is a green belt with a bayou about 50 yards away. I'm thinking that wind blew weed seeds and what not into my back yard. This is my best assumption.

I took some photos of the weeds. Can anyone help me out and give advice on what I can do to get rid of these and bring back my lovely grass :confused: Do I need to kill the grass and reseed, Do I need to sod the back yard? I dont know

http://i40.tinypic.com/fp2wbo.jpg

http://i41.tinypic.com/flvlzt.jpg

http://i40.tinypic.com/219xqm9.jpg

http://i42.tinypic.com/9jk2mh.jpg

Ric
02-07-2009, 11:42 AM
txadam

To my knowledge about Texas, all the good herbicides for St Augustine are Restricted Use and can not be purchased by homeowner. My advice is to hire a reputable Lawn Care Company that has both access to good chemicals and the knowledge to apply them.

RigglePLC
02-07-2009, 12:43 PM
White flowers, chickweed. Purple flowers, henbit. Both are winter annuals--start in fall--bloom in spring--go to seed and die when temps hit about 85. I know nothing about ST Augustine, but you may need to treat in the fall for best results.

txadam
02-08-2009, 11:06 PM
anyone else have any input?

ted putnam
02-08-2009, 11:17 PM
White flowers, chickweed. Purple flowers, henbit. Both are winter annuals--start in fall--bloom in spring--go to seed and die when temps hit about 85. I know nothing about ST Augustine, but you may need to treat in the fall for best results.

Riggle's right. Mowing will help and even kill some of it and you can kill what is left with post emergence weed control. Problem is, the seed that has been produced already will germinate when the time is right. So, to achieve the best results and not have to deal with the problem year after year, apply pre-emergence in the Fall and then again in the Spring. Doing this will minimize weed problems greatly.

ted putnam
02-08-2009, 11:27 PM
My St. Augustine lawn is getting overrun by all these damn weeds. I do not know what to do to get rid of this. I pretty much cant see anymore grass.

Some back story. After Hurricane Ike, our fence was destroyed and knocked down. It was down for several weeks since we were behind on getting it fixed. Behind our house is a green belt with a bayou about 50 yards away. I'm thinking that wind blew weed seeds and what not into my back yard. This is my best assumption.

I took some photos of the weeds. Can anyone help me out and give advice on what I can do to get rid of these and bring back my lovely grass :confused: Do I need to kill the grass and reseed, Do I need to sod the back yard? I dont know

http://i40.tinypic.com/fp2wbo.jpg

http://i41.tinypic.com/flvlzt.jpg

http://i40.tinypic.com/219xqm9.jpg

http://i42.tinypic.com/9jk2mh.jpg

No need to sod or reseed. They are just cool season weeds that will compete with the St.Aug during Spring greenup. Like Riggle said, they'll die with warmer temps. Apply pre-emergence to prevent this problem in the future. Good Luck

greendoctor
02-08-2009, 11:38 PM
One of the preemergents for use on st augustine is atrazine. This should be applied in the winter and/or early spring. If you are a homeowner it is available as a 4% concentrate to be sprayed evenly over the entire lawn. BTW, how big is the lawn? Anything over a few 1000 sq ft is best treated by a pro, unless you have a boom sprayer.

txadam
02-09-2009, 10:54 AM
Well, my yard is pretty huge! I would say that 1000sqft is on the smaller range of my backyard. Is a post emergence harmful to pets? I have 2 small dogs..

Edit. My whole lot is 7200 sqft and I would say my backyard is a good portion of that, maybe 2000sqft.

RigglePLC
02-09-2009, 12:04 PM
Follow weed control label directions carefully. If it doesn't say keep dogs off-relax. However, most pet owners like to be careful--follow the directions for humans. Hope this helps.

txadam
02-09-2009, 12:21 PM
that helps just fine, thanks! I will look into some post emergence care this weekend and MOW!!! I still have some left over fencing from hurricane ike that I need to dispose of, thanks.

RAlmaroad
02-09-2009, 01:55 PM
Adam: Before you open this site--If you decide to try these as they are in HOME OWNER Percentages; YOU MUST READ AND FOLLOW THE LABEL TO THE UTMOST!!!!!! You'll be fine on the atrazine as it is really weak. But on the second one, you might even go 3/4 strength.
Another product for home owners is Image http://www.amdro.com/Image/Info/instructions.html in the hose-end bottle; But you must have actively growing grass or YOU WILL KILL IT. You can read and follow the label at Lowes. Image in the hose end bottle will cover 6-7K of grass and it must be watered in within 7 days after application.
Anyway, read these:

http://www.southernag.com/Atrazine.htm

Number 2:

Also on the same site:LAWN WEED KILLER WITH TRIMEC
CONTAINS: 5.30% Mecoprop, 3.05% 2,4-D, 1.29% Dicamba.
USE ON: St. Augustine, Bermuda, Bahia, Blue Grass, Rye and Centipede.
CONTROLS: Most Broadleaf Weeds.
RATE: 1 to 1 1/2 oz. per gallon to 400 sq. ft. for Southern Grasses. 1 1/2 oz. per gallon to 400 sq. ft. for Northern Grasses. APPLICATION: Apply as a uniform low pressure spray with a fan nozzle on turf.
CAUTION: DO NOT ALLOW TO CONTACT SHRUBS OR DESIRABLE PLANTS. Spray to accurately obtain indicated coverage.
PACKED: 12xPt . - #13502 12xQt. - #13503 4xGl. - #13504
For more information on weeds go to www.weedalert.com

txadam
02-27-2009, 10:35 PM
I appreciate all the help guys