Soil pH range for plants

1. pH measured on a scale from 1 to 14.

2. Soil pH is a log function. pH of 5 is 10 times more acid than a pH of 6.

3. Best range for most plants: pH 6.0 - 7.5 . Nutrient availability for the majority of cations is good in this range.

0

1

2

3

10

11

12

13

14

Most Plants

Acid-loving Plants

ACID

ALKALINE

NEUTRAL

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