What is a weed?

A weed is a plant growing out of place. Weeds are usually introduced species but can sometimes be non-indigenous native plants. It is vital to understand the physiological characteristics of individual species in order to effectively prioritise their management and adequate follow-up and maintenance requirements. Some species have persistent soil-stored seedbanks, whilst others may be short-lived but spread vegetatively or via seed and propagules. Equally important is knowing whether they are;

  • Edge weeds,
  • Bushland invaders or;
  • Ecosystem-transformers

Weeds  

What problems do weeds cause?

  • Compete with native plants
  • Reduce germination of natives plants
  • Suppress native tree and seedling growth
  • Modify nutrient cycling within an ecosystem
  • Change soil conditions
  • Affect food and habitat opportunities for native fauna
  • Create harbour for feral animals
  • Alter fire regimes
  • Reduce recreation potential of bushland

What is going wrong with our bushland?

  • Pressures from urban development decreased values of natural areas
  • Increased nutrient loads from fertiliser and stormwater/urban run-off
  • Changes to hydrological regimes
  • ErosionErosion of soil and
  • Sedimentation
  • Feral and domestic animals
  • Weed invasion
  • Altered fire regimes
  • Passive management of natural areas
  • Rubbish dumping and encroachment
  • Inappropriate recreational activities


The process of reversing bushland degradation is achievable through good planning and active management. This can be accomplished by having a sound knowledge and comprehensive understanding of the natural ecological processes operating within our bushland areas and native ecosystems.

Prickly Pear
Prickly Pear.

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