crabgrass in floratam

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– posted 01 March 2004 14:50

we need help in finding the right herbicide to kill the crabgrass in floratam in Lake County Florida. What can we use that will not kill our lawn while treating for the crabgrass

Dchall_San_Antonio – posted 04 March 2004 01:34

A new product was developed in Florida last year. The active ingredient is baking soda. Try wetting the crabgrass and dusting it with baking soda. It should turn black in a day or two.

Jacob942 – posted 25 March 2004 20:11

Baking soda is a great fungicide, although it is far better to use potasium bicarbonate to avoid the sodium (i.e., salt) found in the BS. I use PB on my crape myrtles, roses, etc with very nice results.

I haven’t heard of either product used as a discriminating herbicide. I know that you can pour baking soda in cracks to kill grass and weeds (chiefly due to the salt content) but can’t say I could find any reference to an effective use of baking soda that would not kill the grass along with the weeds.

You do have me curious, however. Can you provide a website reference for this use?

Dchall_San_Antonio – posted 29 March 2004 09:00

I found it.

http://www.crabgrassalert.com/index.htm

Jims’ Turf – posted 06 April 2004 19:33

I am still getting great results with the Agralawn Crabgrass Killer formerly crabgrass control. It has not burned or damaged any of the St. Augustine I have applied it to in any of my applications. The baking soda is in there but the way it is formulated with the other ingredients must make it less harsh on the grasses I want to save.

lawn supervisor – posted 26 April 2004 17:36

Baking soda does work somewhat although you are not systemically killing the crabgrass this works by altering the pH of the plant arm and hammer laundry detergent usually will control it the for a while longer because the phosphates in the soap allow the soda to be absorbed better ground cinnamon will also burn it back like the b.s. i still miss Asulox though to bad it is nolonger registered for residential although it can be bought for agricultual if you know a farmer.

lovesun – posted 14 September 2005 16:33

I applied baking soda and the results are promising. What dod I do next? Yank the dead stuff out or let it sit. Do I reapply after a few weeks again. Who knows the answers. Thank you in advance. My place is in Florida (Central)

Alex_in_FL – posted 20 August 2006 07:58

If you pull it out you make room for new weed seeds to come in so I would just leave it alone (maybe rake it at most).

Next thing is to put down a good pre-emergent in February each year. Then you have less weeds and NO crabgrass.

jethro – posted 08 August 2007 08:03

Once I put down the baking soda, how long does it take for the crabgrass to die? I noticed its turning black.

john1086 – posted 20 September 2007 05:54

What is a good pre-emergent product for controlling crabgrass in St. Augustine grass? Scott’s has a fertilizer with pre-emergent but they can’t apply it and I have not found and place selling it.

FloridaCrab – posted 21 January 2008 14:49

I have been trying the baking soda treatment on carpet grass in my St. Augustine lawn. The carpet grass is dead, and the St. Augustine is taking over. I am pleased so far.

billcr – posted 20 November 2008 11:19

See my post: Then go to www.gardenweasel.com

quote:Originally posted by

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:we need help in finding the right herbicide to kill the crabgrass in floratam in Lake County Florida. What can we use that will not kill our lawn while treating for the crabgrass