Weed risk analysis documents
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
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
Date modified:
2021-02-12