pH of the soil

Previous Test (December 2018)

In December 2018, I checked the pH of soil in the garden. With a testing kit, I found that the pH was 7.5. Above 7 is alkaline; below 7 is acidic. With a pH reference list, I found that most plants I planned to grow required a pH of around 6.5-7.

So, I added compost to increase the acidity of the soil. With compost, the acidity dropped nearer to 6.5-7.  

Current Test (December 2019)

I repeated the test today (12/30/2019). I obtained a soil sample around 3 inches deep, placed a small amount in a test tube, added a chemical provided, and added water. I put a lid on the test tube, shook the test tube, and let it settle.

The color turned a darker green. I then compared this to a chart provided and determined that the pH was a little above neutral (7). I concluded that the pH was around 7.25.

Soil sample in a test tube is compared with a chart of colors indicating pH.  The sample's color is a green between the 7 and 7.5 options in the chart
Test for pH

Purpose: Adjust the soil’s acidity to match plants

With a pH preference chart, I found the suitable pH ranges for the plants in the garden.

  • Lemon: 6.0-7.5
  • Peppers: 5.5-7

After checking the pH preference, 7.25 is a little too alkaline for the peppers. I will add compost this year as well.

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