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Can I use iron sulfate to reduce moss in lawn with acidic soil?

Iron (or ferrous) sulfate is the active ingredient in many lawn moss control so the answer is “yes”.   This will not correct the conditions that allowed the moss to take hold so there is more you need to do to get your lawn to thrive in that area or the moss will bounce right back.

 

You’ll need to do a pH test to see how much lime you need to counteract the acidity that has built up in the soil.  HERE’S a link about pH testing.  You’ll need to rake out the dead moss and then put down some grass seed to crowd out any moss that attempts to re-establish itself in the area.  This is the perfect time to start grass from seed.  HERE’S a link to more on that.

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