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Issaquah, WA

I recently got my results back from my winter soil test. Everything is looking pretty good except for my soil's Ph. I have a 350 square foot patch and my current Ph is 7.7. I would like to get it down between 6.5 adn 7. If you have any suggestions for corrections I would be most appreciative and thankful.

Chris

2/9/2011 11:54:20 PM

Linden, Mi.,

try, gypsum,compost,peat

3/12/2011 3:46:49 PM

Linden, Mi.,

any of the above should get what you want

3/12/2011 3:47:47 PM

ummm, gypsum has no effect on pH. Good compost should be almost pH neutral so little affect. Peat moss "if" not pH adjusted will do the trick and add OM,,, patch size would determine if this is a practical ($) solution.

Most often sulphur is used to adjust high pH. If you had a lab test they can give you the amount to use for your sq footage.

3/12/2011 5:27:38 PM

Ontario, Canada.

I have added Aluminum Sulphate the past two years and this morning I have been adding again. My conditions will vary from yours as I added about 2 pounds over 1K of patch size with my current pH at 7.2. I will retest in a couple of weeks as the change will be nearly instant depending upon rainfall events.

The correct amounts to add depend on a lot of factors therefore I would certainly check with your lab and ask them.

3/19/2011 11:05:55 AM

Ontario

Yep Dan....using Sulfur here as well....but only adding in spring as it requires warm soil to do anything and it is not a quick fix, takes many years to bring it down, so it is yearly maintenance till you get where you need to be.

3/19/2011 12:49:17 PM