Tuesday, 30 June 2009

The problem with weeds: bushland intruders

Many hardy garden plants that grow well in island conditions can easily become weeds. They invade the bush and muscle out native species. We’ve all seen the suffocating asparagus fern, which probably arrived in someone’s hanging basket in the 70’s.

The colourful autumnal display of yellow and red behind Frenchmans beach is actually easter cassia and umbrella trees both weeds and spread by feeding rainbow lorikeets. This lush scene, which certainly appeals to the eye, however needs to be transformed to the silvery greys of the banksia, pandanus and casurina -the aesthetic of the native bush.

Grass clippings and garden rubbish, often including those rampant but fashionable succulents, should not be dumped in bushland. Native bushland thrives in low-nutrient sandy soils and does not need this extra mulch. Dumping garden rubbish just spreads weeds. Put it in your rubbish bin instead!

Weeds to watch out for These weeds invade our gardens too!
  • Basket asparagus fern 
  • Broad leaf pepper 
  • Umbrella tree 
  • Easter cassia 
  • Glory lily 
  • Brazilian cherry 
  • Ochna
 
  • Indian Hawthorn 
  • Purple succulent 
  • Mother of millions 
  • Agave/sisal