High Levels of P K and CA in Garden Soil

foodforthought added on March 29, 2017 | Answered

I recently got soil test results from a lab which showed excessive amounts of Phosphorus (185), Potassium (263), and Calcium (5565) in garden soil! Just as planting season arrives. What am I to do?

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Certified GKH Gardening Expert
Answered on March 30, 2017

Some soils have naturally high levels of these nutrients, but high levels can also be the result of adding too much fertilizer or manure in previous years. Excessive potassium can cause plants to grow too fast and become weak.

You could try growing plants that are heavy feeders- plants that use up a lot of a certain nutrient. For example, tomatoes are heavy phosphorus feeders, so they'll probably do well and help remove some of the excess. Broccoli and beans are heavy potassium feeders.

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