What neutralizes acidic soil?

Answer 1

If you mean you've recently added too much fertilizer, you can apply LOTS of water to dilute and flush away the excess, if not all of it. If it's been too long, the grass (or whatever) will probably absorb too much and there may be nothing you can do to prevent the plant from suffering or dying. You can also apply lime to raise the pH level, which will likely be lowered by the excessive fertilizer. And it should be a given that you get a soil test done. (I did a simple web search on "soil testing" with my city name and got lots of free local resources for testing.)

Answer 2

When soil tests show that the pH is 7.5 or above, sulfur may be needed and it should be applied according to recommendations. Sulfur treatments should be made in the fall or spring. Avoid using limestone consisting of hard, abrasive particles or ones that are so finely ground they pack in the hopper. If you must apply lime, use only free flowing, compacted (pelletized), and non-abrasive lime products.

Answer 3

Use a mixture called Sulphric Chloride which will neutrilise the soil inunder 1 hour

Answer 4

Limestone