Thread: garden lime
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Old February 25, 2016   #26
PureHarvest
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Join Date: Mar 2014
Location: Mid-Atlantic right on the line of Zone 7a and 7b
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Jpop, just remember, pH does not tell you the whole story.
It's like using a thermometer to diagnose why you don't feel well.

Patient: "Dr., I took my temperature reading. It was 100 degrees. What do I have?"
Dr: "I have no way of knowing without more info. Your temp reading is a symptom, not a cause."

So, a pH test can be helpful, because it will tell you if you are waaaaay out of whack to clue you in on a nutrient imbalance, but you will still be left wondering what that actually is.
You can't just assume that a pH below 6.5 will need limestone. Then I would ask you what type of limestone will you need, dolomitic (lots of Mg with the C), or calcitic (little Mg with the C)? Are you gonna use calcium nitrate?
Then their is your source water. Look at Worth's example earlier with high calcium water...
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