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| A combination of eradication & surveillance target species lists for the Northwest region (Humboldt and Del Norte counties). | ||||||
| 31 PLANTS |
|
Agrostis avenacea Pacific bentgrass
• invasive non-native
Perennial grass 
© 2021 John Rawlings 
© 2016 Andrew Longman 
© 2022 Donald Burk |
|
Alternanthera philoxeroides Alligator weed, Alligatorweed
• invasive non-native
Perennial herb 
© 2019 Robin Carter 
© 2023 Ron Vanderhoff 
© 2024 Mike Russler |
|
Alyssum murale yellowtuft
non-native
Annual herb 
© 2008 Carri Pirosko 
© 2011 Carri Pirosko 
© 2008 Carri Pirosko |
|
Arundo donax Giant reed
• invasive non-native
Perennial grass 
© 2013 Miriam Sachs Martin 
© 2020 Jennifer Mo 
© 2018 Ron Vanderhoff |
|
Brachypodium distachyon False brome, Purple false brome
• invasive non-native
Annual, Perennial grass 
© 2019 Ron Vanderhoff 
© 2021 John Rawlings 
© 2019 Ron Vanderhoff |
|
Carduus nutans Musk thistle, Nodding plumeless thistle
• invasive non-native
Perennial herb 
© 2022 Bob Sweatt 
© 2022 Bob Sweatt 
© 2022 Bob Sweatt |
|
Carthamus lanatus Woolly distaff thistle
• invasive non-native
Annual herb 
© 2019 Lenihan Mazur 
© 2019 Danielle Carney 
© 2019 Danielle Carney |
|
Centaurea calcitrapa Purple star thistle, Red star thistle
• invasive non-native
Annual, Perennial herb 
© 2021 R.A. Chasey 
© 2019 MCOSD EDRR 
© 2022 R.A. Chasey |
|
Centaurea virgata ssp. squarrosa Squarrose knapweed
• invasive non-native
Perennial herb 
© 2013 Gerald Carr 
© 2013 Gerald Carr 
© 2013 Gerald Carr |
|
Chondrilla juncea Hogbite, Skeleton weed
• invasive non-native
Perennial herb 
© 2021 George Williams 
© 2024 Mike Russler 
© 2021 Bob Sweatt |
|
Cynara cardunculus Artichoke thistle, Cardoon
• invasive non-native
Perennial herb 
© 2021 R.A. Chasey 
© 2022 Ron Vanderhoff 
© 2022 Ron Vanderhoff |
|
Cynoglossum officinale Gypsyflower, Hound's tongue, Purple houndstongue
• invasive non-native
Perennial herb 
© 2019 Raymond Gill 
© 2019 Raymond Gill 
© 2019 Raymond Gill |
|
Dittrichia graveolens Stinkwort
• invasive non-native
Annual herb 
© 2017 Bob Huttar 
© 2019 Ron Vanderhoff 
© 2019 Ron Vanderhoff |
|
Echium pininana Pine echium
non-native
Shrub 
© 2014 Alex Beakes 
© 2014 Toni Corelli 
© 2014 Ben Pittenger |
|
Eichhornia crassipes Common water hyacinth
• invasive non-native
Perennial herb 
© 2021 Mike Russler 
© 2018 Rachelle Gray 
© 2020 Ron Vanderhoff |
|
Euphorbia oblongata Eggleaf spurge
• invasive non-native
Perennial herb 
© 2017 Gary McDonald 
© 2019 Randy Huey 
© 2017 Gary McDonald |
|
Euphorbia virgata Leafy spurge
• invasive non-native
Perennial herb 
© 2019 Matt Weston 
© 2019 Matt Weston 
© 2015 Dean Kelch |
|
Fallopia japonica Japanese knotweed
• invasive non-native
Perennial herb 
© 2021 Margot Cunningham 
© 2024 Jacob Martin 
© 2019 John Malpas |
|
Fallopia sachalinensis Giant knotweed
• invasive non-native
Perennial herb 
© 2024 Patrick Hoffman 
© 2024 Patrick Hoffman 
© 2023 John Malpas |
|
Geranium lucidum Shiny geranium, Shining geranium
• invasive non-native
Annual, Biennial herb  © 2024 Gabriel Campbell 
© 2024 Patrick Hoffman 
© 2021 Susan Fawcett |
|
Hydrilla verticillata Hydrilla, Waterthyme
• invasive non-native
Perennial herb 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff 
© 2024 Ron Vanderhoff |
|
Kochia scoparia Common red sage, Mexican fireweed, Summer cypress
• invasive non-native
Annual herb 
© 2013 Daniel Lubin 
© 2023 R.A. Chasey 
© 2013 Daniel Lubin |
|
Lepidium appelianum Hairy whitetop
• invasive non-native
Perennial herb 
© 2019 Richard Spjut 
© 2017 Leif Johnson 
© 2019 Richard Spjut |
|
Lythrum salicaria Purple loosestrife
• invasive non-native
Perennial herb 
© 2023 Donald Burk 
© 2022 Eric Jennings 
© 2020 Katie Rian |
|
Onopordum acanthium Scotch cottonthistle
• invasive non-native
Perennial herb 
© 2021 Diana Wing 
© 2019 Catherine Talbot 
© 2018 Joe Woods |
|
Persicaria wallichii Himalayan knotweed
• invasive non-native
Perennial herb 
© 2017 Redwood Community Action Agency 
© 2019 David Juliano 
© 2014 Ramona Robison |
|
Acroptilon repens Russian knapweed
non-native
Perennial herb 
© 2017 Barbara Boethling 
© 2014 Steve Matson 
© 2017 Barbara Boethling |
|
Sesbania punicea Red sesbania, Rattlebox
• invasive non-native
Shrub 
© 2020 Jennifer Mo 
© 2017 Ellen Uhler 
© 2021 HARDEEP BAINS |
|
Tamarix parviflora Fourstamen tamarisk, Smallflower tamarisk
• invasive non-native
Tree, Shrub 
© 2020 Leslie Cobb 
© 2020 Leslie Cobb 
© 2015 Steve Matson |
|
Tamarix ramosissima Saltcedar, Tamarisk
• invasive non-native
Tree, Shrub 
© 2018 Larry E. Hendrickson 
© 2017 Barbara Boethling 
© 2022 Ron Vanderhoff |
|
Watsonia meriana Bulbil bugle lily
• invasive non-native
Perennial herb 
© 2017 Juan de Dios Villarino 
© 2019 Cynthia Powell 
© 2012 John Sayers |