Landcare is a non-governmental community movement dedicated to preventing land degradation and achieving sustainable land management. It consists of a network of local volunteer groups of which there are over 1700 in New South Wales alone. Each group works to find local solutions to local problems such as salinity, soil degradation, animal pests, weeds, vegetation loss, waterside erosion, poor water quality, coastal degradation and urban land degradation. If you appreciate how lucky we are in the Helensburgh district to enjoy a relatively unspoiled bush environment you should also be aware that it is under serious threat. read more

Tuesday 11 July 2023

BE WEED WISE - Asthma Weed

 Asthma weed, Parietaria judaica

Asthma weed, also known as pellitory of the wall and sticky weed, is a native of Europe, central and western Asia and northern Africa. It has invaded and is common in some part of eastern New South Wales, southern Victoria and south-eastern South Australia, as well as being present in other states and Lord Howe Island.

It can be found growing in urban areas (i.e. in walls, footpaths, embankments, etc.). It also inhabits gardens, rocky crevices, cliffs, coastal environs, riparian vegetation, waste areas and roadsides. In Helensburgh, it is present in damper areas, e.g. along creek and drainage lines, but is spreading.


As well as competing with our native species, it also has an impact on human health. Contact with the plant can induce severe skin reactions. Its pollen causes asthma, conjunctivitis, rhinitis and hay fever. 


Pellitory has inconspicuous small flowers in spring and into summer. Plants mainly spread by abundant seeds, which are dispersed by wind, water and by attachment to humans and animals by sticky hairs.

Carefully remove by hand being sure to dig out all the roots. Where roots are anchored in walls or rocks, herbicide may need to be used. For large areas spraying with herbicide will be necessary.

For more information: https://weeds.dpi.nsw.gov.au/Weeds/Pellitory

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