Weed Risk Assessment Scoresheets and Reports

Weed species listed under Tasmania's Biosecurity Act 2019 have undergone a weed risk assessment prior to their declaration. Weed risk assessments are also used to assess the threats posed by species proposed for import into Tasmania.

The foundation for the current Tasmanian weed risk assessments (WRA) is a scoresheet system developed at the national level, and provided by the Department of Agriculture and Food, Western Australia. With regard to a particular plant species, this system:

• Considers historical, biogeographical and biological/ecological details of the candidate species;
• Seeks Yes, no or don't know responses for 48 questions; and
• Results in a tally of scoresheet responses to in turn provide an outcome of reject, evaluate or accept with regard to the candidate species.

WRA scoresheets for declared species can be found under the column below headed "Risk Assessment Scoresheet".

The WRA scoresheets system used in Tasmania is detailed in Attachment B of A report on the development of a Weed Risk Assessment System commissioned by the Australian Weeds Committee and the Plant Industries Group by P.C. Pheloung (1995). The relevant section of the report is available for download below as a PDF file.

Weed Potential of New Plants (233 KB)

In addition to this, many declared species have had detailed assessment reports written for them. Where available, these can be found under the column below headed "Risk Assessment Report".

Note - Scoresheets are provided as Excel workbooks and Reports are provided as PDFs.

Species	Common Name	Risk Assessment Scoresheet	Risk Assessment Report
Achnatherum caudata	Espartillo	Scoresheet
Acroptilon repens	Creeping Knapweed	Scoresheet
Allium vineale	Crow Garlic	Scoresheet
Alternanthera philoxeroides	Alligator Weed	Scoresheet
Amaranthus albus	Tumble Weed	Scoresheet
Amaranthus spinosus	Spiny Amaranth, Needle Burr	Scoresheet	Report
Anthemis cotula	Stinking Mayweed	Scoresheet
Asparagus asparagoides (= Myrsiphyllum asparagoides)	Bridal Creeper	Scoresheet
Asparagus scandens	Asparagus Fern	Scoresheet	Report
Asphodelus fistulosus	Onion Weed	Scoresheet
Bassia scoparia (= Kochia scoparia)	Kochia	Scoresheet
Berberis darwinii	Darwin's Barberry	Scoresheet	Report
Berkheya rigida	African Thistle	Scoresheet
Bifora testiculata	Bifora	Scoresheet
Cabomba caroliniana	Fanwort	Scoresheet
Calluna vulgaris	Heather	Scoresheet	Report
Cardaria draba	White Weed (Hoary Cress)	Scoresheet
Carduus nutans	Nodding Thistle	Scoresheet
Carduus pycnocephalus	Slender Thistle	Scoresheet
Carduus tenuiflorus	Slender Thistle	Scoresheet
Carex albula	New Zealand Hair Sedge	Scoresheet
Carex buchananii	Leather Leaf Sedge	Scoresheet
Carex flagellifera	New Zealand Sedge	Scoresheet
Carex testacea	New Zealand Sedge	Scoresheet
Carthamus lanatus L.	Saffron Thistle	Scoresheet
Cenchrus incertus (= Cenchrus pauciflorus)	Spiny Burrgrass	Scoresheet
Cenchrus longispinus	Spiny Burrgrass	Scoresheet
Centaurea calcitrapa	Star Thistle	Scoresheet	Report
Centaurea eriophora	Mallee Cockspur	Scoresheet	Report
Ceratophyllum demersum	Hornwort	Scoresheet
Chondrilla juncea	Skeleton Weed	Scoresheet
Chrysanthemoides monilifera (including subspecies)	Boneseed, Bitou Bush	Scoresheet
Cirsium arvense	Californian Thistle	Scoresheet
Coprosma robusta	Karamu	Scoresheet	Report
Cortaderia spp	Pampas Grasses	Scoresheet
Crupina vulgaris	Common Crupina	Scoresheet	Report
Cuscuta spp	Dodder	Scoresheet
Cynara cardunculus	Artichoke Thistle	Scoresheet
Cyperus esculentus	Yellow Nut Sedge	Scoresheet	Report
Cyperus rotundus	Purple Nut Grass	Scoresheet	Report
Cytisus multiflorus	White Spanish Broom	Scoresheet	Report
Cytisus scoparius	English Broom	Scoresheet
Datura spp	Datura	Scoresheet
Dittrichia viscosa	False Yellow Head	Scoresheet	Report
Echium plantagineum L.	Paterson's Curse	Scoresheet
Echium vulgare L.	Viper's Bugloss	Scoresheet
Egeria densa (= Elodea densa)	Egeria, Dense Water Weed	Scoresheet
Eichhornia crassipes	Water Hyacinth	Scoresheet
Eleocharis parodii	Parodi	Scoresheet	Report
Elodea canadensis	Canadian Pondweed, Elodea	Scoresheet
Emex australis	Spiny Emex	Scoresheet
Epilobium nummulariifolium	Creeping Willow Herb	Scoresheet
Equisetum species	Horsetail	Scoresheet
Eragrostis curvula	African Lovegrass	Scoresheet
Erica lusitanica	Spanish Heath	Scoresheet
Fallopia japonica	Japanese Knotweed	Scoresheet	Report
Festuca gautieri	Bear-skin Fescue	Scoresheet	Report
Foeniculum vulgare	Fennel	Scoresheet
Galium spurium	False Cleavers	Scoresheet
Galium tricornutum	Three-horned Bedstraw	Scoresheet
Genista monspessulana	Montpellier Broom	Scoresheet
Gymnocoronis spilanthoides	Senegal Tea Plant, Temple Plant	Scoresheet
Heliotropium europaeum	Common Heliotrope	Scoresheet
Heracleum mantegazzianum	Giant hogweed	Scoresheet	Report
Hieracium spp	Hawkweed, Orange Hawkweed, Mouse Ear Hawkweed	Scoresheet
Homeria spp	Cape tulips	Scoresheet
Hydrilla verticillata	Hydrilla	Scoresheet
Hypericum perforatum	St John's Wort	Scoresheet
Hypericum tetrapterum	St John's Wort	Scoresheet	Report
Lagarosiphon major	Lagarosiphon, Oxygen Weed	Scoresheet
Lantana camara	Lantana	Scoresheet
Leycesteria formosa	Elisha's Tears	Scoresheet	Report
Lycium ferocissimum	African Boxthorn	Scoresheet
Marrubium vulgare	Horehound	Scoresheet
Myriophyllum aquaticum	Parrot's Feather	Scoresheet
Nassella charuana		Scoresheet
Nassella neesiana	Chilean Needle Grass	Scoresheet
Nassella trichotoma	Serrated Tussock	Scoresheet
Oenanthe pimpinelloides	Meadow Parsley	Scoresheet	Report
Onopordum acaulon		Scoresheet
Onopordum spp	Onopordum Thistles	Scoresheet
Orobanche spp (except O. minor and O. cernua var. australiana)	Broomrape	Scoresheet
Pennisetum macrourum	African Feathergrass	Scoresheet
Pennisetum villosum	Feathertop	Scoresheet
Phyla canescens		Scoresheet
Rorippa sylvestris	Creeping Yellowcress	Scoresheet
Rubus fruticosus aggregate	Blackberry	Scoresheet
Sagittaria graminea	Sagittaria	Scoresheet
Sagittaria montevidensis	Arrowhead	Scoresheet
Salix spp (except S. bablyonica, S. x calondendron and S. x reichardtii)	Willows except weeping willows, pussy willow and sterile pussy willow	Scoresheet
Salpichroa origanifolia		Scoresheet
Salvinia molesta	Salvinia	Scoresheet	Report
	Ragwort	Scoresheet	Report
	Silver-leaf Nightshade	Scoresheet	Report
	Apple-of-Sodom	Scoresheet	Report
Solanum triflorum	Cut Leaf Nightshade	Scoreshet
Striga spp (all non-indegenous species)	Witchweed	Scoresheet
Tamarix aphylla	Athel Pine	Scoresheet
Thinopyrum ponticum		Scoresheet
Trapa spp	Floating Water Chestnut, Water Caltrop	Scoresheet
Tribulis terrestris	Caltrop	Scoresheet
Ulex europaeus	Gorseet
pii	Mediterranean Daisy	Scoresheet	Report
Xanthium spp	Burrs	Scoresheet
Zizania palustris		Scoresheet