harveyc

Wow! Yes! A pH that low is pretty rare in California except in areas where farmers have applied lots of ammonium sulfate.

A low pH like that is great for phosphorus being made more available but it's detrimental for some other nutrients as well as some beneficial microbial life.

It's usually best to also check your water pH but with a soil pH that low you have a lot of capacity to buffer even a moderately high water pH.

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