Hey everyone! I'm trying to figure out why my garden soil tests show an insane amount of calcium—like 1 to 2 tons per acre! I thought maybe the test was off, but I have two other samples that also show high levels, just not as extreme. I've seen some recommendations from Clemson for soil management, but I'm really curious if anyone else knows why my calcium levels are so elevated, especially since potassium and phosphorus are also high, but calcium is way up there.
3 Answers
Sounds like you might be dealing with chalky soil! If you’re living over limestone or using well water heavily, that could easily raise your calcium levels. It's quite common in certain areas, especially where the geology contributes to high calcium content.
Have you looked into the type of soil you have? If you’re in South Carolina’s southern piedmont region, sandy loam with some clay surfaces is pretty standard, and that could definitely explain the high calcium levels. Clay soils tend to hold more calcium, especially if there have been limestone applications in your area.
You might find this resource useful: [Link to Soil Calcium Info](https://www.uaex.uada.edu/publications/pdf/FSA-2118.pdf). It suggests that while sandy soils generally have lower calcium, clayey soils can test above 2500 ppm. So, the high calcium is not unusual if your soil is more clay-based, and it’s necessary for maintaining proper pH levels.