Weed risk analysis documents

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The following is a list of the available weed risk analysis documents prepared by the Canadian Food Inspection Agency (CFIA).

The CFIA conducts weed risk analyses in accordance with international guidelines for pest risk analysis established by the International Plant Protection Convention (IPPC) of the Food and Agriculture Organization of the United Nations (FAO). For further information on the IPPC models for pest risk analysis, refer to the International Standards for Phytosanitary Measures (ISPMs).

Pest risk analysis is a multi-stage process, and 3 types of documents are listed below:

categorizations
weed risk assessments
risk management documents

Categorizations represent a preliminary stage in the risk analysis process. They may stand alone or be rolled into full weed risk assessments.

Risk assessments are science-based evaluations. They summarize the available information on a plant and evaluate the probability of entry, establishment, and spread in Canada, and the potential economic and environmental consequences.

Risk management documents provide an evaluation of options to reduce the risk of introduction and spread of a pest (ISPM No. 5). They may also be used for risk communication and public consultation. For some plant species, CFIA has combined the weed risk assessment and risk management document into a single pest risk analysis document.

Please note that these documents have been prepared by CFIA for phytosanitary purposes only. They address the risk posed to the Canadian economy and environment by species not yet present in Canada, or present but not widely distributed and under official control.

For more information or to obtain any of the documents on this list please send your request to cfia.botany-botanique.acia@canada.ca.

List of available weed risk analysis documents prepared by CFIA

A B C D E F G H I J K L M

N O P Q R S T U V W X Y Z

A
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Abies homolepis	Yes	No	No	Only in cultivation	6	Not assessed	No
Abies sibirica	Yes	No	No	Only in cultivation	1	Not assessed	No
Acanthospermum australe	Yes	No	No	No	8	Anthropogenic	No
Achillea santolina	Yes	No	No	No	8	Not assessed	No
Achyranthes aspera	Yes	No	No	No	7	Environmental	No
Achyranthes japonica	Yes	Yes	No	Yes	5	Environmental	No
Acroceras zizanioides	Yes	No	No	No	10	Environmental	No
Actinoscirpus grossus	Yes	No	No	No	8	Agricultural	No
Adonis aestivalis	Yes	Pending	No	Unknown	5	Agricultural	No
Adonis flammea	Yes	Pending	No	No	5	Agricultural	No
Aegilops cylindrica	No	Yes	Yes	Yes	3	Agricultural	Yes
Aegilops geniculata	Yes	Pending	No	No	6	Agricultural	No
Aegilops spp.	Yes	Pending	No	Only in cultivation	5	Agricultural	A. cylindrica
Aegilops triuncialis	Yes	Yes	No	No	5	Agricultural	No
Ageratum conyziodes	No	Yes	No	No	7	Agricultural	No
Agrostis avenacea	Yes	Pending	No	No	8	Environmental	No
Ailanthus altissima	Yes	Pending	No	Yes	5	Environmental	No
Aira elegantissima	Yes	No	No	No	5	Environmental	No
Ajuga chamaepitys	Yes	No	No	No	6	Agricultural	No
Akebia quinata	Yes	Pending	No	Only in cultivation	4	Environmental	No
Albizia julibrissin	Yes	Pending	No	Only in cultivation	6	Environmental	No
Alhagi maurorum	No	Yes	No	No	6	Agricultural	No
Alopecurus myosuroides	No	Yes	Yes	No	6	Agricultural	Yes
Alstroemeria aurea	Yes	No	No	Only in cultivation	7	Environmental	No
Alternanthera sessilis	No	Yes	Yes	No	7	Agricultural	No
Amaranthus deflexus	Yes	No	No	No	6	Environmental	No
Amaranthus graecizans	Yes	Pending	No	No	6	Agricultural	No
Amaranthus muricatus	Yes	No	No	No	9	Not assessed	No
Amaranthus palmeri	Yes	Yes	No	Yes	4	Agricultural	No
Amblyopyrum muticum	Yes	No	No	No	5	Not assessed	No
Ammi majus	Yes	No	No	Yes	6	Environmental	No
Ammi visnaga	Yes	No	No	Only in cultivation	8	Agricultural	No
Ampelopsis glandulosa	Yes	Pending	No	Only in cultivation	6	Environmental	No
Andropogon gayanus	Yes	No	No	No	9	Environmental	No
Angelica archangelica	Yes	No	No	Only in cultivation	3	Not assessed	No
Annona muricata	Yes	No	No	Only in cultivation	11	Not assessed	No
Anthemis pseudocotula	Yes	No	No	No	8	Not assessed	No
Antigonon leptopus	Yes	No	No	No	9	Not assessed	No
Apera spica-venti	Yes	Pending	No	Yes	Not assessed	Agricultural	No
Aralia elata	Yes	Yes	No	Yes	3	Environmental	No
Arivela viscosa	Yes	No	No	No	8	Agricultural	No
Artemisia austriaca	Yes	Pending	No	No	4	Environmental	No
Artemisia japonica	Yes	No	No	Only in cultivation	5	Not assessed	No
Arundo donax	No	Yes	Yes	Only in cultivation	6	Environmental	Yes
Asparagus asparagoides	Yes	No	No	No	9	Environmental	No
Asphodelus fistulosus	Yes	Yes	No	No	7	Environmental	No
Astragalus membranaceus	Yes	No	No	Only in cultivation	1	Not assessed	No
Austroeupatorium inulifolium	Yes	No	No	No	10	Agricultural	No
Avena barbata	Yes	Pending	No	Only in cultivation	6	Environmental	No
Avena strigosa	Yes	No	No	Only in cultivation	3	Agricultural	No

B
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Bassia prostrata	Yes	Yes	No	No	4	Environmental	No
Berkheya rigida	Yes	No	No	No	8	Environmental	No
Bidens pilosa	No	Yes	No	No	6	Agricultural	No
Bidens subalternans	Yes	No	No	No	9	Not assessed	No
Bituminaria bituminosa	Yes	No	No	No	7	Not assessed	No
Blainvillea acmella	Yes	No	No	No	8	Agricultural	No
Blainvillea dichotoma	Yes	No	No	No	Not assessed	Not assessed	No
Blumea lacera	Yes	No	No	No	8	Environmental	No
Boerhavia diffusa	Yes	Yes	No	No	8	Agricultural	No
Boissiera squarrosa	Yes	No	No	No	8	Agricultural	No
Bothriochloa ischaemum	Yes	Yes	Yes	No	4	Environmental	No
Bothriochloa laguroides	Yes	No	No	No	5	Not assessed	No
Brachypodium distachyon	Yes	Yes	No	No	5	Environmental	No
Brachypodium sylvaticum	Yes	Pending	No	Yes	2	Environmental	No
Brassica carinata	Yes	No	No	Only in cultivation	9	Not assessed	No
Brassica tournefortii	Yes	No	No	No	9	Environmental	No
Bromus brachyanthera	Yes	No	No	No	8	Agricultural	No
Bromus danthoniae	Yes	Pending	No	Only in cultivation	5	Agricultural	No
Bromus fasciculatus	Yes	No	No	No	9	Agricultural	No
Bromus madritensis	Yes	Pending	No	No	6	Agricultural	No
Bromus pectinatus	Yes	Pending	No	No	4	Agricultural	No
Bryonia alba	Yes	Pending	No	No	4	Environmental	No
Buddleia davidii	Yes	No	No	Yes	5	Not assessed	No

C
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Cabomba caroliniana	No	Yes	No	Yes	Not assessed	Environmental	No
Cajanus cajan	Yes	No	No	No	10	Not assessed	No
Calendula officinalis	No	Yes	No	Yes	4	Not assessed	No
Camelina microcarpa	Yes	No	No	Yes	Not assessed	Not assessed	No
Camelina rumelica	Yes	No	No	No	6	Agricultural	No
Camelina sativa	Yes	No	No	Yes	Not assessed	Not assessed	No
Campuloclinium macrocephalum	Yes	No	No	No	8	Environmental	No
Campylopus introflexus	Yes	Pending	No	Yes	Not assessed	Environmental	No
Caragana bungei	Yes	No	No	No	2	Not assessed	No
Caragana spinosa	Yes	No	No	No	2	Not assessed	No
Cardiospermum halicacabum	Yes	No	No	No	6	Environmental	No
Carduus pycnocephalus	Yes	Pending	No	No	6	Agricultural	No
Carlina vulgaris	No	Yes	No	No	5	Not assessed	No
Carthamus tenuis	Yes	No	No	No	8	Not assessed	No
Cassinia arcuata	Yes	No	No	No	9	Agricultural	No
Cassytha spp.	Yes	No	No	No	8	Agricultural	No
Celtis sinensis	Yes	Pending	No	Only in cultivation	6	Environmental	No
Cenchrus caudatus	Yes	No	No	No	8	Environmental	No
Cenchrus echinatus	No	Yes	Yes	No	8	Agricultural	No
Cenchrus purpurascens	Yes	No	No	Only in cultivation	Not assessed	Not assessed	No
Centaurea depressa	Yes	Pending	No	No	6	Agricultural	No
Centaurea iberica	No	Yes	Yes	No	6	Agricultural	Yes
Centaurea melitensis	Yes	No	No	Yes	4	Environmental	No
Centaurea phrygia	No	Yes	No	No	2	Not assessed	No
Centaurea solstitialis	No	Yes	Yes	No	5	Environmental	Yes
Centaurea virgata	Yes	Pending	No	No	4	Environmental	No
Centella asiatica	Yes	Pending	No	Only in cultivation	6	Environmental	No
Centrapalus pauciflous	Yes	No	No	Only in cultivation	9	Not assessed	No
Cephalaria syriaca	Yes	Pending	No	No	6	Agricultural	No
Ceratopteris thalictroides	Yes	No	No	No	9	Not assessed	No
Cestrum elegans	Yes	Pending	No	Only in cultivation	8	Environmental	No
Cestrum laevigatum	Yes	Pending	No	No	8	Environmental	No
Chloris pycnothrix	Yes	No	No	No	9	Agricultural	No
Chrysopogon zizanioides	Yes	No	No	No	8	Agricultural	No
Coix lacryma-jobi	Yes	Pending	No	Only in cultivation	6	Agricultural	No
Coleostephus myconis	Yes	Yes	No	No	7	Agricultural	No
Commelina benghalensis	Yes	No	No	No	8	Agricultural	No
Commelina diffusa	Yes	No	No	No	5	Agricultural	No
Consolida regalis	Yes	No	No	Yes	Not assessed	Agricultural	No
Cordyline australis	Yes	No	No	Only in cultivation	8	Environmental	No
Cortaderia jubata	Yes	Yes	No	No	7	Environmental	No
Cortaderia richardii	Yes	Pending	No	Only in cultivation	8	Environmental	No
Cortaderia selloana	Yes	Yes	No	Only in cultivation	6	Environmental	No
Corydalis incisa	Yes	Pending	No	No	6	Environmental	No
Cosmos sulphureus	Yes	No	No	Only in cultivation	Not assessed	Not assessed	No
Cotoneaster dammeri	Yes	No	No	Only in cultivation	6	Not assessed	No
Cotoneaster horizontalis	Yes	No	No	Yes	6	Environmental	No
Crambe abyssinica	Yes	No	No	Only in cultivation	Not assessed	Not assessed	No
Crassocephalum crepidiodies	Yes	Pending	No	No	7	Agricultural	No
Crassula helmsii	Yes	Pending	No	No	7	Environmental	No
Crotalaria juncea	Yes	No	No	No	9	Environmental	No
Crupina vulgaris	No	Yes	Yes	No	4	Agricultural	Yes
Cuphea hybrid	No	Yes	No	No	3	Not assessed	No
Cuphea hyssopifolia	Yes	No	No	No	8	Not assessed	No
Cuphea ignea	Yes	No	No	No	8	Not assessed	No
Cuphea llavea	Yes	No	No	No	8	Not assessed	No
Cuphea procumbens	Yes	No	No	Only in cultivation	6	Not assessed	No
Cupressus sempervirens	Yes	No	No	Only in cultivation	7	Environmental	No
Cuscuta approximata	Yes	Yes	No	Yes	3	Agricultural	Yes
Cuscuta australis	Yes	No	No	No	5	Agricultural	Yes
Cuscuta cassytoides	Yes	No	No	No	8	Agricultural	Yes
Cuscuta chinensis	Yes	Yes	No	No	3	Agricultural	Yes
Cuscuta epilinum	Yes	Yes	No	Yes	3	Agricultural	Yes
Cuscuta epithymum	Yes	No	No	Yes	5	Agricultural	Yes
Cuscuta europaea	Yes	Yes	No	No	5	Agricultural	Yes
Cuscuta japonica	Yes	No	No	No	8	Agricultural	Yes
Cuscuta monogyna	Yes	No	No	No	7	Agricultural	Yes
Cuscuta reflexa	Yes	No	No	No	8	Agricultural	Yes
Cuscuta suaveolens	Yes	Yes	No	No	4	Agricultural	Yes
Cussonia spicata	Yes	No	No	No	8	Not assessed	No
Cyamopsis tetragonoloba	Yes	No	No	No	7	Not assessed	No
Cynanchum laeve	Yes	Pending	No	No	5	Agricultural	No
Cynoglossum lanceolatum	Yes	No	No	No	7	Agricultural	No
Cyanotis axillaris	Yes	No	No	No	10	Agricultural	No
Cyperus exaltatus	Yes	No	No	No	8	Agricultural	No
Cyperus flavidus	Yes	No	No	No	7	Agricultural	No
Cyperus rotundus	No	Yes	Yes	No	7	Agricultural	No

D
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Dactyloctenium aegypticum	Yes	No	No	No	5	Agricultural	No
Desmostachya bipinnata	Yes	Pending	No	No	7	Agricultural	No
Dicksonia Antarctica	Yes	No	No	Only in cultivation	8	Not assessed	No
Didymosphenia geminata	No	Yes	No	Yes	3	Environmental	No
Digitaria abyssinica	Yes	No	No	No	8	Agricultural	No
Digitaria ciliaris	Yes	No	No	No	5	Agricultural	No
Digitaria ternata	Yes	No	No	No	8	Agricultural	No
Digitaria velutina	Yes	No	No	No	9	Agricultural	No
Dioscorea nipponica	Yes	No	No	Only in cultivation	3	Not assessed	No
Dioscorea polystachya	No	Yes	Yes	Only in cultivation	5	Environmental	Yes
Diospyros lotus	Yes	No	No	Only in cultivation	6	Environmental	No
Drosera capensis	Yes	Pending	No	Only in cultivation	8	Environmental	No

E
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Echinochloa colonum	No	Yes	Yes	No	6	Agricultural	No
Echium plantagineum	No	Yes	Yes	Yes	5	Environmental	Yes
Eleusine coracana	Yes	No	No	No	9	Agricultural	No
Eleusine indica	Yes	No	No	Yes	5	Agricultural	No
Eleutherococcus senticosus	Yes	No	No	Only in cultivation	2	Not assessed	No
Emex australis	Yes	No	No	No	8	Agricultural	No
Emex spinosa	Yes	No	No	No	8	Environmental	No
Eragrostis tef	Yes	No	No	No	9	Not assessed	No
Erigeron bonariensis	Yes	Pending	No	No	7	Agricultural	No
Eriochloa villosa	No	Yes	Yes	Yes	2	Agricultural	Yes
Erucaria hiiica	Yes	No	No	No	8	Not assessed	No
Erysimum cuspidatum	Yes	No	No	No	6	Not assessed	No
Euphorbia hirta	Yes	No	No	No	8	Agricultural	No
Euphorbia lagascae	Yes	No	No	Only in cultivation	4	Not assessed	No
Euphorbia oblongata	Yes	No	No	No	8	Environmental	No

F
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Falcaria vulgaris	Yes	Yes	No	No	4	Agricultural	No
Fallopia baldschuanica	Yes	Pending	No	Only in cultivation	5	Environmental	No
Fargesia rufa	Yes	No	No	Only in cultivation	5	Not assessed	No
Fedia cornucopiae	Yes	No	No	Only in cultivation	8	Agricultural	No
Festuca gautieri	Yes	No	No	Only in cultivation	6	Agricultural	No
Ficaria verna	Yes	Pending	No	Yes	4	Environmental	No
Fuirena ciliaris	Yes	No	No	No	6	Agricultural	No
Fumaria parviflora	Yes	Pending	No	No	6	Agricultural	No

G
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Galium divaricatum	Yes	No	No	Unknown	Unknown	Not assessed	No
Galium verrucosum	Yes	No	No	No	6	Agricultural	No
Galega officinalis	Yes	Yes	Yes	Yes	5	Environmental	No
Geranium dissectum	Yes	No	No	Yes	5	Not assessed	No
Geranium lucidum	No	Yes	No	Yes	6	Environmental	No
Gevuina avellana	Yes	No	No	No	8	Not assessed	No
Gladiolus undulatus	Yes	No	No	No	9	Environmental	No
Glaucium corniculatum	Yes	Pending	No	Only in cultivation	6	Environmental	No
Gnaphalium affine	Yes	No	No	No	6	Agricultural	No
Gundelia tournefortii	Yes	Pending	No	No	5	Not assessed	No
Gynandropsis gynandra	Yes	Pending	No	No	7	Agricultural	No

H
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Hakea gibbosa	Yes	Pending	No	No	9	Environmental	No
Hakea salicifolia	Yes	Pending	No	No	8	Environmental	No
Hakea sericea	Yes	Pending	No	No	8	Environmental	No
Halogeton glomeratus	No	Yes	Yes	No	3	Agricultural	No
Hedychium coronarium	Yes	No	No	No	8	Environmental	No
Hedysarum coronarium	Yes	No	No	No	8	Not assessed	No
Heliotropium europaeum	Yes	Pending	No	No	5	Agricultural	No
Heracleum mantegazzianum	Yes	Yes	No	Yes	3	Environmental	No
Hibiscus cannabinus	Yes	No	No	No	8	Not assessed	No
Hippophae rhamnoides	Yes	No	No	Yes	Not assessed	Not assessed	No
Holcus mollis	Yes	Pending	No	Yes	4	Environmental	No
Hordeum vulgare subsp. spontaneum	Yes	Pending	No	No	6	Agricultural	No
Hypochaeris glabra	Yes	No	No	Yes	5	Environmental	No

I
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act
Ibicella lutea	Yes	No	No	No	8	Agricultural	No
Imperata cylindrica	Yes	Yes	No	Only in cultivation	8	Agricultural	No
Inula britannica	Yes	Yes	No	Yes	4	Environmental	No
Inula conyzae	Yes	No	No	No	5	Agricultural	No
Ipomoea hederacea	Yes	Pending	No	Yes	3	Agricultural	No
Ipomoea lacunosa	Yes	Pending	No	Yes	5	Agricultural	No
Ipomoea quamoclit	Yes	No	No	Unknown	6	Environmental	No
Isachne globosa	Yes	No	No	No	8	Agricultural	No
Ischaemum muticum	Yes	No	No	No	9	Agricultural	No

J
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Jasminum humile	No	Yes	No	No	7	Environmental	No
Jatropha curcas	Yes	Yes	No	Unknown	9	Environmental	No
Jatropha gossypiifolia	Yes	No	No	No	9	Environmental	No
Jatropha podagrica	Yes	No	No	No	9	Anthropogenic	No
Jovellana punctata	Yes	No	No	No	8	Not assessed	No
Juglans mandshurica	Yes	No	No	Only in cultivation	4	Not assessed	No

K
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Kyllinga polyphylla	Yes	No	No	No	9	Agricultural	No
Kyllinga pulchella	Yes	No	No	No	8	Agricultural	No

L
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Lablab purpureus	Yes	No	No	Yes	9	Agricultural	No
Lactuca orientalis	Yes	No	No	No	7	Not assessed	No
Leptochloa panicea	No	Yes	No	No	6	Agricultural	No
Leptospermum scoparium	Yes	No	No	Only in cultivation	7	Environmental	No
Lepyrodiclis holosteoides	Yes	Pending	No	No	4	Agricultural	No
Lespedeza cuneata	Yes	Pending	No	Yes	5	Environmental	No
Leucas martinicensis	Yes	No	No	No	9	Agricultural	No
Leucojum aestivum	Yes	No	No	Yes	4	Environmental	No
Leycesteria formosa	Yes	Pending	No	Only in cultivation	8	Environmental	No
Ligustrum obtusifolium	Yes	No	No	Only in cultivation	3	Environmental	No
Lilium formosanum	Yes	No	No	Only in cultivation	8	Environmental	No
Limnanthes alba	Yes	Yes	No	Yes	7	Environmental	No
Linaria dalmatica	Yes	No	No	Yes	Not assessed	Environmental	No
Linaria genistifolia	Yes	Pending	No	No	4	Environmental	No
Linaria repens	Yes	No	No	Yes	Not assessed	Agricultural	No
Linaria vulgaris	Yes	No	No	Yes	Not assessed	Agricultural	No
Linum bienne	Yes	Pending	No	Yes	5	Agricultural	No
Linum decumbens	Yes	No	No	No	9	Not assessed	No
Linum setaceum	Yes	No	No	No	9	Not assessed	No
Linum stelleroides	Yes	Pending	No	No	4	Agricultural	No
Linum strictum	Yes	Pending	No	No	6	Environmental	No
Liriope muscari	Yes	No	No	Only in cultivation	6	Not assessed	No
Lolium rigidum	Yes	Pending	No	No	7	Agricultural	No
Ludwigia prostrata	Yes	Pending	No	No	5	Agricultural	No
Lupinus luteus	Yes	No	No	Only in cultivation	Not assessed	Agricultural	No
Luziola subintegra	Yes	No	No	No	10	Environmental	No
Lygodium japonicum	Yes	Yes	No	No	8	Environmental	No

M
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Malva nicaeensis	Yes	No	No	No	8	Agricultural	No
Marsilea macropoda	Yes	Pending	No	No	8	Aquatic	No
Mauranthemum paludosum	Yes	No	No	Only in cultivation	9	Anthropogenic	No
Megathyrsus maximus	Yes	No	No	No	8	Agricultural	No
Melia azedarach	Yes	No	No	Only in cultivation	7	Environmental	No
Melianthus comosus	Yes	No	No	No	9	Agricultural	No
Microciturs australasica	Yes	No	No	No	9	Not assessed	No
Microstegium vimineum	No	Yes	Yes	Yes	5	Environmental	Yes
Mikania micrantha	Yes	Yes	No	No	8	Agricultural	No
Milium vernale	No	Yes	No	No	5	Agricultural	No
Miscanthus giganteus	No	Yes	No	Yes	4	Environmental	No
Mollugo pentaphylla	Yes	No	No	No	5	Agricultural	No
Morus nigra	Yes	No	No	Only in cultivation	7	Environmental	No
Mucuna pruriens	Yes	No	No	No	7	Environmental	No
Myoporum laetum	Yes	No	No	No	9	Environmental	No

N
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Nassella charruana	Yes	No	No	No	9	Agricultural	No
Nassella hyalina	Yes	No	No	No	8	Environmental	No
Nassella leucotricha	Yes	No	No	No	8	Environmental	No
Nassella megapotamica	Yes	No	No	No	8	Not assessed	No
Nassella neesiana	Yes	Pending	No	No	7	Environmental	No
Nassella tenuissima	No	Yes	No	Only in cultivation	6	Agricultural	No
Nassella trichotoma	No	Yes	Yes	No	7	Environmental	Yes
Nepeta sibirica	Yes	No	No	Yes	2	Not assessed	No
Noccaea caerulescens	Yes	No	No	No	4	Environmental	No
Notobasis syriaca	Yes	No	No	No	8	Agricultural	No
Nymphoides peltata	Yes	Yes	No	Yes	4	Aquatic	No

O
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Olea europaea	Yes	No	No	Only in cultivation	8	Environmental	No
Oplismenus hirtellus subsp. undulatifolius	Yes	Pending	No	No	6	Environmental	No
Opuntia stricta	No	Yes	No	No	8	Environmental	No
Oryza sativa	Yes	No	No	No	3	Not assessed	No
Ottochloa nodosa	Yes	No	No	No	9	Agricultural	No
Oxalis articulata	Yes	No	No	No	8	Environmental	No
Oxalis latifolia	Yes	No	No	No	8	Agricultural	No
Oxalis perdicaria	Yes	No	No	No	9	Environmental	No
Oxygonum sinuatum	Yes	No	No	No	9	Agricultural	No

P
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Pachira aquatica	Yes	No	No	No	10	Not assessed	No
Papaver somniferum	Yes	No	No	Yes	3	Agricultural	No
Parthenium hysterophorus	Yes	No	No	No	7	Agricultural	No
Paspalum dilatatum	No	Yes	Yes	No	6	Agricultural	Yes
Paspalum distichum	No	Yes	No	No	6	Agricultural	No
Paspalum laeve	Yes	No	No	No	6	Agricultural	No
Paspalum racemosum	Yes	No	No	No	8	Not assessed	No
Paspalum scrobiculatum	Yes	No	No	No	7	Environmental	No
Passiflora apetala	Yes	No	No	No	10	Environmental	No
Passiflora mollissima	Yes	No	No	No	8	Environmental	No
Paulownia elongata	Yes	No	No	Only in cultivation	6	Not assessed	No
Paulownia fortunei	Yes	No	No	No	6	Not assessed	No
Paulownia hybrid	Yes	No	No	Only in cultivation	6	Not assessed	No
Paulownia tomentosa	Yes	Pending	No	Only in cultivation	5	Environmental	No
Peganum harmala	No	Yes	No	No	3	Environmental	No
Pennisetum clandestinum	Yes	No	No	No	9	Environmental	No
Pennisetum purpureum	Yes	No	No	Yes	9	Agricultural	No
Perilla frutescens	Yes	Yes	No	Unknown	3	Agricultural	No
Persicaria bungeana	Yes	Pending	No	No	2	Agricultural	No
Persicaria perfoliata	Yes	Yes	Yes	No	6	Environmental	Yes
Persicaria thunbergii	Yes	Pending	No	No	3	Agricultural	No
Phacelia tanacetifolia	Yes	No	No	No	6	Not assessed	No
Phalaris brachystachys	Yes	No	No	No	7	Agricultural	No
Phalaris minor	Yes	Pending	No	No	7	Agricultural	No
Phalaris paradoxa	Yes	Pending	No	No	7	Agricultural	No
Phellodendron amurense	Yes	No	No	Only in cultivation	3	Environmental	No
Phoradendron leucarpum	Yes	Yes	No	No	7	Environmental	No
Phyllostachys bissetii	Yes	Pending	No	Only in cultivation	5	Environmental	No
Picnomon acarna	Yes	Pending	No	No	5	Agricultural	No
Pinellia ternata	Yes	Pending	No	Yes	5	Agricultural	No
Pinus pinaster	No	Yes	No	No	8	Environmental	No
Pinus pinea	Yes	No	No	No	7	Environmental	No
Pinus sibirica	Yes	No	No	Only in cultivation	1	Not assessed	No
Pistacia chinensis	Yes	No	No	Only in cultivation	6	Environmental	No
Pithecoctenium crucigerum	Yes	Pending	No	No	9	Environmental	No
Pleioblastus argenteostriatus	Yes	No	No	Only in cultivation	7	Not assessed	No
Pleioblastus fortunei	Yes	No	No	Only in cultivation	6	Not assessed	No
Plukenetia volubilis	Yes	No	No	No	10	Not assessed	No
Praxelis clematidea	Yes	No	No	No	9	Agricultural	No
Proboscidea louisianica	Yes	No	No	Yes	6	Agricultural	No
Pseudofumaria lutea	Yes	No	No	Yes	Not assessed	Environnemental	No
Psidium cattleianum	Yes	No	No	No	9	Environmental	No
Pueraria montana	No	Yes	Yes	Yes	5	Environmental	Yes

R
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Ranunculus arvensis	Yes	Pending	No	No	5	Agricultural	No
Rapistrum perenne	Yes	No	No	No	6	Not assessed	No
Rauvolfia vomitoria	Yes	No	No	No	10	Environmental	No
Rhamnus alaternus	Yes	No	No	No	7	Environmental	No
Richardia brasiliensis	Yes	No	No	No	7	Agricultural	No
Rottboellia cochinchinensis	Yes	Yes	No	No	6	Agricultural	No
Rubus alceifolius	Yes	No	No	No	8	Agricultural	No
Rumex nepalensis	Yes	Pending	No	No	5	Agricultural	No
Rumex pulcher	Yes	No	No	No	6	Agricultural	No
Rumex sagittatus	Yes	No	No	No	8	Environmental	No

S
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Saccharum spontaneum	Yes	Yes	No	No	5	Agricultural	No
Sagittaria pygmaea	Yes	No	No	No	7	Aquatic	No
Salpichroa origanifolia	Yes	Pending	No	No	6	Environmental	No
Salvia aethiopis	Yes	Pending	No	No	5	Environmental	No
Salvia sclarea	Yes	Pending	No	Only in cultivation	5	Agricultural	No
Scorzonera tau-saghyz	Yes	No	No	No	5	Not assessed	No
Senecio angulatus	Yes	No	No	No	8	Environmental	No
Senecio inaequidens	Yes	Yes	Yes	No	6	Agricultural	Yes
Senecio madagascariensis	No	Yes	Yes	No	8	Agricultural	Yes
Senecio pterophorus	Yes	No	No	No	8	Agricultural	No
Senecio vernalis	Yes	No	No	No	6	Agricultural	No
Senegalia catchetu	Yes	No	No	No	9	Agricultural	No
Senna obtusifolia	Yes	No	No	No	7	Agricultural	No
Senna occidentalis	Yes	No	No	No	8	Agricultural	No
Senna tora	Yes	No	No	No	7	Agricultural	No
Sesbania exaltata	Yes	Pending	No	Yes	6	Agricultural	No
Setaria pumila subsp. pallidefusca	Yes	No	No	No	7	Agricultural	No
Sida acuta	Yes	No	No	No	8	Agricultural	No
Sideritis montana	Yes	Yes	No	No	3	Agricultural	No
Silene pendula	Yes	No	No	No	5	Not assessed	No
Siraitia grosvenorii	Yes	No	No	Only in cultivation	9	Not assessed	No
Sium sisarum	Yes	No	No	No	5	Not assessed	No
Solandra maxima	Yes	No	No	No	9	Not assessed	No
Solanum aviculare	Yes	No	No	Yes	6	Not assessed	No
Solanum elaeagnifolium	No	Yes	Yes	No	5	Agricultural	Yes
Solanum sisymbriifolium	Yes	No	No	Yes	5	Agricultural	No
Soliva sessilis	No	Yes	No	Yes	7	Environmental	No
Spartium junceum	Yes	Pending	No	Only in cultivation	7	Environmental	No
Spermacoce alata	Yes	No	No	No	9	Agricultural	No
Sphaerophysa salsula	Yes	Pending	No	Yes	4	Agricultural	No
Stachys annua	Yes	Pending	No	Yes	2	Agricultural	No
Syringa josikaea	Yes	No	No	Only in cultivation	2	Not assessed	No
Syringa komarowii subsp. reflexa	Yes	No	No	Only in cultivation	3	Not assessed	No
Syringa oblata	Yes	No	No	Only in cultivation	3	Not assessed	No
Syringa pubescens subsp. microphylla	Yes	No	No	Only in cultivation	3	Not assessed	No
Syringa reticulata	Yes	No	No	Only in cultivation	4	Not assessed	No
Syringa villosa	Yes	No	No	Only in cultivation	2	Not assessed	No
Syringa wolfii	Yes	No	No	Only in cultivation	4	Not assessed	No

T
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Taeniatherum caput-medusae	No	Yes	No	No	5	Environmental	No
Tagetes minuta	Yes	No	No	Unknown	6	Agricultural	No
Tamarix spp.	No	Yes	No	Only in cultivation	3	Environmental	No
Taraxacum kok-saghyz	Yes	Yes	Yes	Only in cultivation	5	Agricultural	No
Tarchonanthus camphoratus	Yes	No	No	No	8	Agricultural	No
Thesium ramosum	Yes	Yes	No	Yes	3	Environmental	No
Toona sinensis	Yes	No	No	Only in cultivation	5	Environmental	No
Tordylium maximum	Yes	No	No	No	6	Agricultural	No
Torilis arvensis	Yes	Pending	No	Yes	5	Agricultural	No
Trachyspermum ammi	Yes	No	No	Only in cultivation	7	Not assessed	No
Trapa natans	No	Yes	No	Yes	1	Environmental	No
Tridax procumbens	Yes	Yes	No	No	8	Agricultural	No
Trifolium vesiculosum	Yes	No	No	No	6	Not assessed	No
Turnera ulmifolia	Yes	No	No	Only in cultivation	9	Not assessed	No

U
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Ulva lactuca	Yes	No	No	Yes	Not assessed	Aquatic	No
Urochloa fasciculata	Yes	No	No	No	7	Not assessed	No
Urochloa panicoides	Yes	Yes	No	No	8	Agricultural	No
Utricularia aurea	Yes	No	No	No	7	Aquatic	No
Utricularia bifida	Yes	No	No	No	7	Agricultural	No
Utricularia livida	Yes	Pending	No	Only in cultivation	8	Environmental	No
Utricularia sandersonii	Yes	No	No	Only in cultivation	9	Environmental	No

V
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Ventenata dubia	Yes	Pending	No	Unknown	5	Agricultural	No
Vigna unguiculata	Yes	No	No	Only in cultivation	Not assessed	Not assessed	No
Vincetoxicum hirundinaria	Yes	No	No	No	6	Not assessed	No
Vincetoxicum pycnostelma (syn. Cynanchum paniculatum)	Yes	No	No	No	4	Not assessed	No
Viscum album	Yes	Yes	No	Unknown	6	Agricultural	No
Vitex agnus-castus	Yes	No	No	Only in cultivation	6	Environmental	No
Vitex rotundifolia	Yes	Yes	No	Yes	8	Environmental	No

W
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Wisteria spp.	Yes	No	No	Only in cultivation	5	Environmental	No
Wollemia nobilis	No	Yes	No	Only in cultivation	7	Environmental	No

X
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Xeranthemum annuum	Yes	No	No	Only in cultivation	5	Not assessed	No

Z
Species	Categorization	Weed Risk Assessment	Risk Management Document	Present in Canada	Plant Hardiness	Impact Potential (most representative)	Regulated (Plant Protection Act)
Ziziphus jujuba	Yes	No	No	Only in cultivation	5	Environmental	No
Zygophyllum fabago	No	Yes	Yes	No	5	Agricultural	Yes

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Date modified:: 2021-02-12