Pretty, but gazania invasion growing

Each month I will highlight a specific weed problem that is of concern within our region.

Gazanias are one of those plants that may look good in your garden, but we (Landcare members) have noticed this species is moving into our reserves and along some of our roads sides.

Gazanias (pictured) flower all year round but predominantly in spring and summer. Flower heads can be 6-12cm across, and the stalk height can reach up to 30cm.

One flower can produce 60 or more seeds which are predominately dispersed by wind; seed can be spread up to 1km away, and can also spread by sending out rhizomes creating new plants.

This plant is highly invasive, especially within our coastal environments.

It can rapidly out compete native plants leading to a decline in biodiversity. This plant can and will take over your property if left unchecked.

Gazanias are a tough, low-growing perennial herb. They grow in clumps and can also form dense carpets.

Pest plants are estimated to cost Australian agriculture $4.2 billion and the natural environment $2.5 billion per annum.

Health impacts are also significant with some being toxic to humans, native animals and livestock.

If you have a weed issue within our region, I am confident there will be other property owners who are also faced with a similar weed issue.

Let us know so we can showcase the weed threats of our region, and in this way we can all work together to protect and manage our region’s natural environment.

I would also recommend this web site www.amlrnrm.sa.gov.au (Adelaide and Mount Lofty Ranges Natural Resource Management Board).

Here you will find a range of fact sheets providing identification and control techniques for common problem weeds in our region.

Learn about coastal region

Our region’s coastal landscapes are one of our greatest environmental assets.

These landscapes have evolved over thousands of years and remain largely untouched.

Unfortunately, this cannot be said for the coastal environments along the Adelaide coastline. With uncontrolled urban development the environment is always the first to go, but there is one such coastal landscape that has withstood the pressure from urban development.

The Tennyson dunes, a small but very important fragmented coastal landscape is one of the last remaining coastal sand dunes remaining within the inner Adelaide region.

The Tennyson dunes is located near West Lakes.

I recently received an open invitation for anyone interested in viewing and learning about one of Adelaide’s most significant pre-European Barrier Costal Dunes.

This is an opportunity to learn about the geological importance of the Tennyson dunes and of the plants, animals and birdlife that live and depend on this unique ecological hot spot.

With special guest Professor Chris Daniels, (Urban Ecologist University of South Australia) and Professor Victor Gostin (Geologist University of Adelaide) together with the Tennyson dunes volunteers you will be able to see what this group is doing to conserve this fragile and fragmented costal landscape for future generations.

The Tennyson Dunes open day is Sunday September 15 from 11am – 2pm.

Walks leave from the Tennyson Dunes car park, Military Road, Tennyson. For further information contact www.tennyson.org.au.

Snake awareness

Two wells, Lewiston and Districts Landcare group has secured funding from Adelaide Mount Lofty Ranges Natural Resource Management Board (AMLRNRMB) to hold a number of snake awareness courses.

These free, half-day workshops will be held at the following venues: Roseworthy Campus, Two Wells and Mallala.

Contact Pat for more information Pat.Wake@tafesa.edu.au.

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