Hypericum perforatum (St John's Wort)
See: https://www.dpi.nsw.gov.au/__data/assets/pdf_file/0007/193075/St-Johns-wort.pdf
St. John's Wort (Hypericum perforatum) is a declared noxious weed in many local government areas of NSW. It is regarded as a significant environmental weed in Victoria and as an environmental weed in the ACT, South Australia, Western Australia and other parts of New South Wales. It is managed to some extent by government and community groups in Victoria, New South Wales and the ACT, and is listed as a priority environmental weed in six Natural Resource Management regions.
It is highly invasive and forms into dense colonies that crowd out native plants. It changes the soil structure to the point where many natives just die out, especially the more delicate ones such as orchids and some lilies and forbs. It is very hard to control since it is able to recover from underground rhizomes which produce new aerial growth each year. In the ACT its spread as been increasing over time and it is a problem in many nature reserves.
This report from 1930 echoes the observations of local observers about the serious nature of this weed: https://ucanr.edu/sites/UCCE_LR/files/180456.pdf
Hypericum perforatum is listed in the following regions:
Canberra & Southern Tablelands | Southern Highlands | Albury, Wodonga | South Coast | Hume | Gippsland
Species information
- Hypericum perforatum Scientific name
- St John's Wort Common name
- Not Sensitive
- Exotic
- Major weed or pest
- Up to 1671.7m Recorded at altitude
- Machine learning
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In flower
- External link More information
Location information
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Maps
Ainslie volcanic grassland Aranda Bushland Attunga Point Banksia Street Wetland Corridor Bass Gardens Park, Griffith Bibbenluke Common Black Mountain Blue Gum Point to Attunga Bay Bluetts Block (402, 403, 12, 11) Bruce Ridge Bruce Ridge to Gossan Hill Bullen Range Bungonia National Park Callum Brae Campbell Park Woodland City Renewal Authority Area Collector TSR Cooleman Ridge Cooma North Ridge Reserve Crace Grasslands Denman Prospect 2 Estate Deferred Area (Block 12) Dryandra St Woodland Emu Creek Fadden Hills Pond Farrer Ridge Flea Bog Flat to Emu Creek Corridor Flea Bog Flat, Bruce Gibraltar Pines Gigerline Nature Reserve Ginninderry Conservation Corridor Googong Foreshore Gordon Pond Gossan Hill Goulburn Mulwaree Council Griffith Woodland Gungaderra Grasslands Gungahlin Pond Hill Reserve Hoover Reserve Hughes Garran Woodland Hughes Grassy Woodland Hume Paddocks Isaacs Ridge Isaacs Ridge and Nearby Isaacs Ridge Offset Area Isabella Pond Jarramlee-West MacGregor Grasslands Jerrabomberra Wetlands Kama Kambah Pool Kosciuszko National Park Lake Burley Griffin West Lake Ginninderra Legacy Park Woodland Reserve Lower Cotter Catchment Lower Molonglo Mawson Ponds Mcleods Creek Res (Gundaroo) McQuoids Hill Meringo Nature Reserve Micalong Gorge Molonglo River Reserve Mount Ainslie Mount Ainslie to Black Mountain Mount Majura Mount Mugga Mugga Mount Painter Mount Pleasant Mount Rogers Mount Taylor Namadgi National Park National Arboretum Forests Percival Hill Pine Island to Point Hut Piney Ridge Point Hut Hill Point Hut to Tharwa Queanbeyan Nature Reserve Red Hill Nature Reserve Red Hill to Yarralumla Creek Rob Roy Range Rock Valley, Tidbinbilla Rocky Hill War Memorial Park and Bush Reserve, Goulburn Saint Mark's College & Grassland. Scrivener Hill Simpsons Hill Stirling Park Stranger Pond Tarengo Reserve (Boorowa) The Fair, Watson The Pinnacle Tidbinbilla Nature Reserve Tuggeranong Creek to Monash Grassland Tuggeranong Hill Tuggeranong Homestead A.C.T. Umbagong District Park University of Canberra Urambi Hills Wanna Wanna Nature Reserve Wanniassa Hill Watson Green Space Watson Woodlands West Belconnen Pond West Goulburn Bushland Reserve West Stromlo -
Places
Barton, ACT Bowning, NSW Canberra Airport, ACT Chapman, ACT Chisholm, ACT Collector, NSW Conder, ACT Crace, ACT Deakin, ACT Denman Prospect, ACT Fadden, ACT Farrer, ACT Fraser, ACT Goulburn, NSW Hawker, ACT Hume, ACT Isaacs, ACT Jerrabomberra, NSW Kaleen, ACT Kambah, ACT Lawson, ACT Michelago, NSW Mount Clear, ACT O'Malley, ACT Red Hill, ACT Russell, ACT Strathnairn, ACT Tharwa, ACT Watson, ACT Wee Jasper, NSW Whitlam, ACT Yarra, NSW Yarralumla, ACT
