Friday, June 10, 2016
Trees in medians
It's a narrow median in a busy road so you plant small, narrow trees like these Native Franjipani*, right?
Because what you end up with is…
A hedge-on-a-stick tree that's constantly being pruned by passing trucks and buses.
What you need to do is the counter-intuitive thing and plant a large-growing tree** so that you end up with…
A tree that forms a canopy above the traffic.
And the asphalt gets shaded.
And the streetscape looks in balance.
And everyone says what a jolly good fellow you are.
The real tragedy of going with small, narrow trees is that it takes ten years before everyone realises it was a mistake and in that time you could have something decent well underway. "Opportunity cost" the economists call it.
* Native Franjipani is Hymenosporum flavum
** London Plane is far and away the best tree for this application. They are consistent, have straight trunks and do relatively little damage to roads given their size.