Real World Gardener Small Trees are Design Elements

November 14th, 2014

GARDENER Wed. 5pm 2RRR 88.5fm Sydney and Across Australia on the Community Radio Network. www.realworldgardener.com<?xml:namespace prefix = "o" />

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DESIGN ELEMENTS

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photo M Cannon

with Louise McDaid, landscape designer.

Nearly every primary school girl or boy will tell you that trees give us oxygen. But exactly how much?

Well science to the rescue and a 30 metre tree can pump out 2,721 kilograms of oxygen in a year, which is enough to support at least two people.

That same tree can absorb as much as 22.7 kilograms of carbon dioxide in a year, which over it’s lifetime is approximately the same amount as would be produced by an average car being driven 41,500 kilometres.

But don’t panic, this week’s episode is about smaller trees and they have their role too.

According to the University of Melbourne, because trees grow faster the older they get, their capacity for photosynthesis and carbon sequestration increases as they age.

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photo M Cannon

 

Don't just plant any tree in a small garden but a tree that's under 10 metres maximum, or which is the classification of a small tree.

In a small garden, trees are much closer so features like the bark can be considered to enhance your garden.

For cool temperate districts a silver birch would look lovely. Otherwise for a similar silvery bark, try Eucalyptus caesia " Silver Princess."

Of course cooler districts are spoilt for choice in the Japanese Maple range.

Another great tree for a bark feature is Crepe Myrtle, especially the Indian Summer Range which is more resistant to powdery mildew.

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