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

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
• Erosion 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.