Real World Gardener Soils Ain’t Soils in Design Elements

May 18th, 2014

REAL WORLD GARDENER Wed. 5pm 2RRR 88.5fm Sydney, streaming live at and Across Australia on the Community Radio Network.<?xml:namespace prefix = "o" />


The complete CRN edition of RWG is available on , just click on 2RRR to find this week’s edition. The new theme is sung by Harry Hughes from his album Songs of the Garden. You can hear samples of the album from the website


with landscape designer Jason Cornish

 Soils are the least glamorous of topics in gardening.

We’ve all heard about soil types a few weeks ago when Louise mentioned them, but why exactly do we have different soil types and can we really change the profile in our lifetime?

Why do we need to bother so much about soils?

Plants obtain most of their oxygen and carbon from the air by photosynthesis; and hydrogen is obtained, directly or indirectly, from the water in the soil.
These three elements together make up over 90 percent of fresh plant tissue.
However, plants cannot survive without the much smaller quantity of essential nutrients that they obtain from the soil, such as nitrogen, phosphorus, potassium, calcium, magnesium and sulphur.

How do different soils come about? why do you have clay soil or sandy soil?
Soil composition is made of the parent material, air and water.
What happens if you have a type of soil that is luxurious loam with the right mix of water air and parent material?


The characteristics of soil play a big part in the plant's ability to extract water and nutrients.
If plants are to grow to their full potential, the soil must provide a everything needed for plant growth.

The things that your soil is made from—your soil's composition—affect all of these aspects of plant growth. Knowing what soils are composed of will help you understand how soil affects plant growth.

Listen to the podcast to find out all the details.



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