Baking Soda damaged (killed?) my lawn - Ask Extension
This is kind of a strange question, but here goes. I take my large dog swimming in lakes and streams often in the summer, and this always leads to a ...
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Baking Soda damaged (killed?) my lawn #190426
Asked June 11, 2014, 4:24 PM EDT
This is kind of a strange question, but here goes. I take my large dog swimming in lakes and streams often in the summer, and this always leads to a very stinky dog the following days. I have been told it is due to organic matter from the water decomposing, etc. At any rate, I cannot give him a bath every time he swims, as this is bad for his skin.
I found what I thought would be a solution, and tried to apply baking soda to his coat after it dried. I knew it would be messy, so I did it in the back yard without even thinking it might damage the lawn. The next day (only about 12 hours later) there were large (6 foot plus) patches of yellow dead or dying grass! Some areas in the center of the patches were actually black! This was 2 days ago.
My question is: do you think the grass will recover? The center portions of the patches don't show any signs of remaining green blades, but there seem to be a few green blades mixed in the outer areas. I used to hose to immediately try to dilute the baking soda as soon as I discovered the damage. I went online and found out it is common for people in Florida to use baking soda on their lawns to control crabgrass in St. Augustine grass, and that evidently does not hurt that species. The Kentucky bluegrass and fescues of my yard do not seem to have such tolerance!
Linn CountyIowa
Expert Response
It's likely the baking soda (sodium bicarbonate) destroyed the grass. Grass can be reestablished in the dead area by sodding or seeding. Sodding can be done anytime during the growing season. Seeding will need to be delayed until late August. Seeding from late May to mid-August is extremely difficult and usually unsuccessful.
If you decide to lay sod within the next few weeks, heavily water the affected area (once or twice) to leach the sodium from the soil. Then lay the sod.
If you decide to sow grass seed in late August, rains over the next several weeks should leach the sodium out of the soil.