Q.High Potassium Levels!
In continuation of a previous question, it was stated that I likely have potassium-magnesium imbalance in the soil, leading to dying-off of plants. I got a soil test done and as correctly mentioned, the potassium levels were 3 times the normal while nitrogen levels were quite low. I have 2 questions: 1. How could this have possibly happened when I didn’t change my fertilizing practices at all? 2. What can I do to get the potassium levels back to normal?
Certified GKH Gardening Expert
This is likely due to overfertilizing. It likely means that you will need to find fertilizers that match your needs according to the test, and fertilize less often. Leeching the soil will help, though. Water it thoroughly. Keep watering. Then test the soil. Keep doing this until levels are back to normal. You could try magnesium sulfate to lock out potassium, as well. Adding nitrogen after flushing can help. Here are some more ideas:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/lowering-potassium-levels.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/all-about-fertilizer
