Jul 18, 2025 · Find the ideal soil pH levels for vegetables, flowers, and shrubs. Use our chart to test and adjust your soil for a healthier, more productive garden.

Plants obtain nearly all their nutrients from the soil, but not all the nutrients present in the soil are accessible to plants. That’s because soil pH affects the form and, therefore, solubility of …

Soil pH is an excellent indicator of the suitability of a soil for plant growth. For most crops, pH of 6 to 7.5 is optimal. Soil pH levels that are too high or too low lead to a deficiency of many …

DOWNLOAD a PDF version of this text HERE.pdf. By Dawn Pettinelli, Associate Extension Educator, PSLA. Questions? Contact: UConn is an equal opportunity program provider and …

Higher soil pH (6.5 and above) may reduce the availability of certain elements, such as micronutrients boron, copper, iron, manganese and zinc. The chart below is a visual …

Highlights Phosphorus (P) is the nutrient most directly affected by soil pH. Most on-going crop production will gradually lower the soil pH. Iron deficiencies are best addressed by avoiding …

Favorable pH ranges for common crops are listed in the table below.

Optimum pH for crop growth VERY VERY STRONGLY MEDIUM SLIGHTLY SLIGHTLY SLIGHTLY SLIGHTLY MEDIUM STRONGLY 4.5 ACID 5.0 ACID 5.5 ACID 6.0 ACID 6.5 …

There are many charts that show the relationship of nutrient availability to the pH of soils. The picture below illustrates more acid pH < 7.0 on the left and more basic pH > 7.0 on the right.

While most crops are assigned a suitable pH range (6.0 to 6.5), producers can maximize yields by better understanding soil properties and crop response. The pH scale (0-14) measures …