Optimum pH for plant growth

Different plants require different soil pH condition to allow growth.

LETTUCE & ONION

OATS

TURNIPS & SWEDES

CABBAGE / BEANS

WHEAT

SUGAR BEET

BARLEY

CARNATION

STRONGLY ACID

MEDIUM ACID

SLIGHTLY ACID

SLIGHTLY ALKALI

MEDIUM ALKALI

STRONGLY ALKALI

VERYSLIGHTLY

ACID

VERYSLIGHTLY

ALKALI

RHODODENDRONS

POTATOES

CARROTS

HYDRANGEA (BLUE)

HYDRANGEA (PINK)

AZALEA & ERICA

RYEGRASS

4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5