While a lawn suffering from fertilizer burn may seem helpless, it is not. It is totally possible to get your lush lawn back after it has suffered fertilizer burn. Though it is not as easy as just watering it, or just giving it more access to sunlight. You can treat your lawn to get its life back, there are some steps you can take to bring it back to life.
1. Try to catch it as soon as it happens. If you have spilled a granular fertilizer, or if you can see it on the ground, grab yourself a broom or a wet and dry vacuum and try to clear up as much as you can before it dissolves into the lawn, the faster you tackle the problem the better.
2. Apply some water to the affected area. Once you have noticed the issue with fertilizer burn get your sprinklers out or your hose, water will help to dilute and flush out the mineral salts from the roots of your lawn On the first day make sure to water until the ground cannot take anymore. Then water every day for a week, do so in the mornings to avoid fungal problems.
3. Once this is done all you can do is wait and see if the lawn will recover. If it does not, wait until early springtime, so you have plenty of planting time left and then over seed in the thin spots, sow seed or sod in the large dead areas. And in the future be careful with your fertilizer.