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I had my garden soil tested at the University of Minnesota, and the results showed a very high phosphorus (P) level (33 ppm). Should I be concerned with the phosphorus level, or will this come down over time?
Last Updated: April 29, 2011
A high level of phosphorus is in many soils, but some of it is bound by the soil and not available to plants. Phosphorus is not toxic, so the levels noted in your soil test are not a problem. University soil test results for samples we submitted recently showed 55 ppm P at one location and 23 ppm P at another.
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