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Burned grass with fertilizer

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  • Sep 30th, 2020 9:02 am
Deal Addict
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Sep 9, 2007
2137 posts

Burned grass with fertilizer

I applied a bit of fertilizer to spots on new sod that didn't seem to get as much water as needed and next day those patches turned yellow and looked burned. I tried washing them thoroughly hoping fertilizer would flush out but that didn't work.

What is the best way to fix the grass? Is it better to wait till next season?
1 reply
Deal Addict
Mar 22, 2017
2353 posts
West GTA
Water heavily to attempt to dilute and wash out the fertilizer - do it as soon as you can. Fertilizer 'burn' comes from excess salts in the soil, changing the osmotic pressure and ripping water out of the plant. By watering heavily you can dilute and remove the salts, which can allow the plant to absorb water and end the damage. I'd put down a couple of inches of water all at once.

This is especially tough on new sod because it doesn't have a strong root system.

Not much else you can do - just water it heavily then hope it comes back. If it doesn't, then it's dead and you might have to resod. If the patches are small then you might get the KBG filling it in over the next season - if they're bigger then you'll need new sod or seed.