Eureka Nursery: Soil PH



Soil PH

In most cases gardeners should not be preoccupied with lists of "ideal" PH ranges for individual plants which are often printed in books, as most plants will grow happily in a PH range from 5.5 to 7.5 particularly if a balanced fertiliser is used. At the high end of the range applications of Iron Chelate or Iron Sulphate may also be beneficial for many plants.

Dolermite should be added only after the PH is verified to be low either with a test kit or by a soil testing laboratory and should rarely need to be added for acid loving plants such as Azaleas. If the PH is high, sulphur may be used, but it is very easy to poison the soil through over application. Applying Iron Sulphate in liquid form after planting and possibly at later intervals may be a safer solution.