Monday, 10 June 2013

Purple Menace Threatens Sydney.


  It’s been said that if our great city hadn’t been plonked on top of Farm Cove, the Sydney environs could have become Australia’s most spectacular National Park.  After all, our region contains over 2,000 native plant species, many more than in the entire U.K. So, here’s my exasperated gripe.  Since Cook first landed, we’ve been decimating the natural vegetation at warp speed. Walk down any suburban street and, chances are, you’ll find not one blade of remnant native grass. 

 To add insult to injury, people still plant harmful species such as Privet and Honeysuckle which escape from gardens and end up as bushland weeds.  Some deluded individuals even book into cruises to view the superficially attractive Jacarandas- a South American tree that is inexorably replacing the majestic Eucalypts and Angophoras around Sydney Harbour. Sadly, Jacarandas have become ubiquitous from Avalon to Zetland (and everywhere in between). In South Africa’s Pretoria, they’ve “wised up”. The “Jacaranda City” (featuring 55,000 such trees) has now classified these purple pests as an “invasive alien plant” due to its destructive root system and thirst for water. BBC clip on pesky Jacarandas


  You can tell I’m not a fan of Jacarandas but don’t get me started on Agapanthus...another introduced purple pollutant that seems to be the unimaginative “plant of choice” for McMansion owners everywhere. If the odd native seedling does appear in the occasional garden, chances are it is not an indigenous species but a hybridised product of the horticulture industry with a name such as “coconut ice” or “peaches and cream”. It’s these kinds of cultivars that provide an unnatural, but bountiful, food supply for Noisy Miners, identified as being the world’s most aggressive territorial bird. They’ve chased virtually every other avian species out of town!
 

 Tim Low in his book “Feral Future” argues that gardening has done more to harm Australia’s environment than mining. It has certainly contributed greatly to the introduction of the more than 2,700 weed species which have become established in Australia at a cost to the economy of over $3 billion p.a. In NSW weeds now make up a massive 21 per cent of the state’s total flora. 


 Even many local Councils are complicit in the “genocide” of native species, especially in our streetscapes. Why would they want to plant locally endemic Banksias when they could choose, hay fever inducing, London Plane Trees or American Liquidambars with invasive roots?  It doesn’t help when professional garden “experts” spruik foreign plants and chemical sprays for a dubious living. The original Sydney flora is diverse, beautiful, climatically hardy, needs no fertilizers or pesticides and supports our wildlife.  To plant these purple monstrosities is not just staggeringly boring, it’s, dare I say it? Un-Australian!

The boring and weedy Agapanthus.