Real World Gardener What’s Soil pH? in Design Elements

May 19th, 2016

REAL WORLD GARDENER Wed. 5pm 2RRR 88.5fm Sydney, streaming live at  and Across Australia on the Community Radio Network. www.realworldgardener.comREALWORLD GARDENER NOW ON FACEBOOK

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SOIL pH series introduction

Chlorosis, or iron deficiency

This next topic isn’t all that glamourous but can mean that your garden plants won’t grow as well if you do nothing about it.

Plants will be stunted, or have deformed leaves, even yellowing leaves with green veins can be one of the outcomes.

You’ll often read or hear the recommendation to check soil pH, but what does that really mean?

Pity about the topic name but let’s find out in this introduction to soil pH.

I'm talking with Glenice Buck, Consulting Arborist and Landscape Designer.

Soil pH measures the alkalinity or acidity levels in the soil.

This ranges from '0' to ;14' on a pH scale, where pH 7 is considered neutral.

pH chart

Levels falling below 7 are acidic and those above 7 are considered alkaline.

Soil pH is important because it influences how easily plants can take up nutrients from the soil.

Did you know that plant roots absorb mineral nutrients such as nitrogen and iron when they are dissolved in water?

If the soil solution (the mixture of water and nutrients in the soil) is too acid or alkaline, some nutrients won’t dissolve easily, so they won’t be available for uptake by roots.

If you have any questions about measuring soil pH drop us a line to


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