Invasive Plants of California's Central Coast Region

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An environmental summary created by the ENVS 560/L Watershed Systems class at CSUMB.

This page is a list of non-native, invasive plants that fall under one of two categories: 1) plant species being actively managed, or proposed for future control by organizations involved in the conservation and restoration of open space in California's Central Coast Region, or 2) plant species recommended for management and observation at a county-wide and regional scales. Information regarding the presence of a species by county was gathered from the Calflora Observation Hotline.

Key to abbreviations

Central Coast Counties Agencies
Santa Clara SCL BLM United States Bureau of Land Management (BLM)
Santa Cruz SCR RCDMC Resource Conservation District of Monterey County (RCDMC)
San Benito SBT MPRPD Monterey Peninsula Regional Park District (MPRPD)
Monterey MON CA State Parks California Department of Parks and Recreation
San Luis Obispo SLO ESF Elkhorn Slough Foundation (ESF)
Santa Barbara SB ESNERR Elkhorn Slough National Estuarine Research Reserve (ESNERR)

Table

Family Common Name Scientific Name Counties Organizations involved in management of Central Coast Region Examples of where species is being controlled
Aizoaceae Carpobrotus edulis, C. chilensis Hottentot fig, iceplant, sea fig SCR, MON, SLO, SB CA State Parks, BLM, ESF/ESNERR, MPRPD Point Lobos SNR [1], Fort Ord Dunes State Park [2], Marina State Beach [3], Moss Landing State Beach [4], Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7], Marina Dunes Preserve [8]
Aizoaceae Conicosia pugioniformis Narrow leaved iceplant SCR, MON, SLO, SB MPRPD Marina Dunes Preserve [8]
Aizoaceae Tetragonia tetragonioides New zealand spinach SCL, SCR, MON, SLO, SB MPRPD Marina Dunes Preserve [8]
Alliaceae Allium triquetrum White flowered onion SCL, SCR, MON, SLO, SB BLM Fort Ord National Monument [5]
Apiaceae Conium maculatum Poison hemlock SCL, SCR, MON, SBT, SLO, SB CA State Parks, Santa Lucia Conservancy [9], BLM, ESF/ESNERR, MPRPD, RCDMC Point Lobos SNR [1], Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7], Carmel River [10]
Apiaceae Foeniculum vulgare Fennel SCL, SCR, MON, SBT, SLO, SB CA State Parks, BLM, ESF/ESNERR, MPRPD Point Lobos SNR [1], Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7]
Apocynaceae Vinca majora Bigleaf periwinkle SCL, SCR, MON, SBT, SLO, SB CA State Parks, ESF/ESNERR, MPRPD Point Lobos SNR [1], Elkhorn Slough [6], Palo Corona Regional Park [7]
Araceae Zantedeschia aethiopica Calla lily SCL, SCR, MON, SLO, SB BLM, ESF/ESNERR Fort Ord National Monument [5], Elkhorn Slough [11]
Araliaceae Hedera helix English ivy SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Palo Corona Regional Park [7]
Asparagaceae Asparagus asparagoides African asparagus fern, bridal creeper SCL, SCR, MON, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Asteraceae Ageratina adenophora * Stinky snakeroot, Thoroughwort SCR, MON, SLO, SB MPRPD Palo Corona Regional Park [7]
Asteraceae Anthemis cotula stinking chamomile SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Asteraceae Arctotheca calendula * Cape weed SCR, MON, SLO, SB
Asteraceae Carduus pycnocephalus Italian thistle SCL, SCR, MON, SBT, SLO, SB CA State Parks, Santa Lucia Conservancy [9], ESF/ESNERR, MPRPD, RCDMC Point Lobos SNR [1], Elkhorn Slough [6], Palo Corona Regional Park [7], Carmel River [10]
Asteraceae Carthamus lanatus (ST) Wooly distaff thistle SCL, SLO, SB
Asteraceae Centaurea diffusa (ET) Diffuse knapweed SCL, MON
Asteraceae Centaurea melitensis Tocalote SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Palo Corona Regional Park [7], Marina Dunes Preserve [8]
Asteraceae Centaurea solstitialis * Yellow star thistle SCL, SCR, MON, SBT, SLO, SB Santa Lucia Conservancy [9], BLM, RCDMC Fort Ord National Monument [5], Carmel River [10]
Asteraceae Centaurea stoebe (ET) Spotted knapweed SCL, MON, SB BLM, ESF/ESNERR Fort Ord National Monument [5]
Asteraceae Chondrilla juncea (ET) Skeleton weed SCL, MON, SLO, SB
Asteraceae Cirsium vulgare Bull thistle SCL, SCR, MON, SBT, SLO, SB Santa Lucia Conservancy [9], ESF/ESNERR, MPRPD Elkhorn Slough [6], Palo Corona Regional Park [7]
Asteraceae Delairea odorata * Cape ivy SCL, SCR, MON, SBT, SLO, SB CA State Parks, Santa Lucia Conservancy [12], ESF/ESNERR, MPRPD, RCDMC Point Lobos SNR [1], Elkhorn Slough [6], Palo Corona Regional Park [7], Carmel River [10]
Asteraceae Dittrichia graveolens Stinkwort SCL, SCR, MON, SBT, SLO, SB Santa Lucia Conservancy [9], BLM Fort Ord National Monument [5]
Asteraceae Helicrysum petiolare (ST) Licorice plant MON, SLO
Asteraceae Helminthotheca echioides Bristly ox-tongue SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Asteraceae Hypochaeris radicata Hairy cats ear SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Asteraceae Lactuca serriola Prickly lettuce SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Asteraceae Onopordum acanthium * Scotch cottonthistle SCR, MON, SBT, SB
Asteraceae Onopordum tauricum * Taurian thistle MON
Asteraceae Senecio glomeratus Cutleaf burnweed, fireweed SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Palo Corona Regional Park [7]
Asteraceae Senecio vulgaris Common groundsel SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Marina Dunes Preserve [8]
Asteraceae Silybum marianum Milk thistle SCL, SCR, MON, SBT, SLO, SB CA State Parks, Santa Lucia Conservancy [9], BLM, ESF/ESNERR, MPRPD Point Lobos SNR [1], Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7]
Asteraceae Sonchus species (asper, oleraceus) Sow thistle SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Asteraceae Xanthium strumarium Rouch cockleburr SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Boranginaceae Pride of madeira Echium candicans SCL, SCR, MON, SBT, SLO, SB MPRPD Palo Corona Regional Park [7]
Boranginaceae Forget me not Myosotis latifolia SCL, SCR, MON, SLO ESF/ESNERR Elkhorn Slough [6]
Brassicaceae Black mustard Brassica nigra SCL, SCR, MON, SBT, SLO, SB CA State Parks, BLM, MPRPD Point Lobos SNR [1], Fort Ord National Monument [5], Palo Corona Regional Park [7], Marina Dunes Preserve [8]
Brassicaceae Field mustard Brassica rapa SCL, SCR, MON, SBT, SLO, SB RCDMC Carmel River [10]
Brassicaceae Sea rocket Cakile maritima SCL, SCR, MON, SLO, SB CA State Parks Moss Landing State Beach [4]
Brassicaceae Shepher's purse Capsella bursa-pastoris SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Brassicaceae Hoary cress Lepidium chalepense SCL, SCR, MON, SBT, SLO, SB BLM, ESF/ESNERR Fort Ord National Monument [5], Elkhorn Slough [6]
Brassicaceae Wild radish Raphanus sativus SCL, SCR, MON, SBT, SLO, SB MPRPD, RCDMC Palo Corona Regional Park [7], Marina Dunes Preserve [8], Carmel River [10]
Caryophyllaceae Chickweed Sellaria media SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Chenopodiaceae Australian saltbush Atriplex semibaccata SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Fort Ord National Monument [5], Elkhorn Slough [6]
Chenopodiaceae Lamb's quarters Chenopodium album SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Chenopodiaceae common red sage, Mexican fireweed Kochia scoparia (ET) MON, SLO, SB
Chenopodiaceae Russian thistle Salsola tragus SCL, SCR, MON, SBT, SLO, SB BLM, ESF/ESNERR Fort Ord National Monument [5], Elkhorn Slough [6]
Convolvulaceae Field bindweed Convolvulus arvensis SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Dipsacaeceae Fuller's teasel Dipsacus fullonum SCL, SCR, MON, SBT, SLO, SB BLM Fort Ord National Monument [5]
Fabaceae Silver wattle Acacia dealbata SCL, SCR, MON, SBT, SLO RCDMC, MPRPD Carmel River [10], Marina Dunes Preserve [8]
Fabaceae Black wattle Acacia decurrens SCR, MON, SLO, SB RCDMC Carmel River [10]
Fabaceae Stink bean, Albizia Albizia lophantha SCR, MON, SLO, SB MPRPD Palo Corona Regional Park [7]
Fabaceae French broom Genista monspessulana * SCL, SCR, MON, SBT, SLO, SB CA State Parks, Santa Lucia Conservancy [9], BLM, ESF/ESNERR, MPRPD, RCDMC Point Lobos SNR [1], Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7], Carmel River [10]
Fabaceae Everlasting pea, sweet pea Lathyrus latifolius * SCL, SCR, MON, SLO, SB BLM [5]
Fabaceae White horehound Marrubium vulgare SCL, SCR, MON, SBT, SLO, SB BLM, ESF/ESNERR Fort Ord National Monument [5], Elkhorn Slough [6]
Fabaceae Rattlebox, scarlet wisteria Sesbania punicea (ST)
Geraniaceae Redstem stork's bill Eodium cicutarium SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Hypericaceae Klamath weed Hypericum perforatum SCL, SCR, MON, SBT, SLO BLM Fort Ord National Monument [5]
Iridaceae Paleyellow iris Iris pseudacorus SCL, SCR, MON, SBT, SLO, SB MPRPD Palo Corona Regional Park [7]
Iridaceae Bulbil bugle lily Watsonia meriana (ET) SCR, SLO
Lythraceae Purple loosestrife Lythrum salicaria (ET, ED) SCL, SCR, MON
Malvaceae Mallow Malva species (parviflora, neglecta) SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, RCDMC Elkhorn Slough [6], Carmel River [10]
Myrtaceae Blue gum Eucalyptus globulus SCL, SCR, MON, SBT, SLO, SB BLM, MPRPD, RCDMC Fort Ord National Monument [5], Elkhorn Slough [6], Marina Dunes Preserve [8], Palo Corona Regional Park [7], Carmel River [10]
Myrtaceae Australian tea tree Leptospermum laevigatum SCL, MON, SLO, SB BLM, ESF/ESNERR Fort Ord National Monument [5]
Oxalidaceae Creeping wood sorrel Oxalis corniculata SCL, SCR, MON, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Oxalidaceae Bermuda buttercup Oxalis pes-caprae SCL, SCR, MON, SBT, SLO, SB BLM, ESF/ESNERR, MPRPD Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7]
Plantaginaceae Purple foxglove Digitalis purpurea (ST) SCL, SCR, MON, SLO, SB
Plantaginaceae Dalmatian toadflax Linaria dalmatica ssp. dalmatica (ST) MON, SLO, SB
Plantaginaceae Plantain Plantago species (major, lanceolata) SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Marina Dunes Preserve [8]
Poaceae Barbed goatgrass Aegilops triuncialis (ET) SCL, SCR, SLO
Poaceae European dune grass Ammophila arenaria SCR, MON, SLO, SB CA State Parks, MPRPD Moss Landing State Beach [4], Marina Dunes Preserve [8]
Poaceae Giant reed Arundo donax * SCL, SCR, SBT, MON, SLO, SB CA State Parks, BLM, RCDMC Fort Ord National Monument [5], Salinas River [13]
Poaceae Wild oat Avena species (barbata, fatua) SCL, SCR, SBT, MON, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Marina Dunes Preserve [8]
Poaceae Slender false brome Brachypodium sylvaticum (ST) SCL, SCR
Poaceae Ripgut brome Bromus diandrus SCL, SCR, SBT, MON, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Marina Dunes Preserve [8]
Poaceae Purple pampas grass, jubata grass Cortaderia jubata * SCL, SCR, SBT, MON, SLO, SB CA State Parks, Santa Lucia Conservancy [12], BLM, ESF/ESNERR, MPRPD, RCDMC Point Lobos SNR [1], Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7], Carmel River [10]
Poaceae Pampas grass Cortaderia selloana * SCL, SCR, MON, SLO, SB Santa Lucia Conservancy [12], ESF/ESNERR, RCDMC Elkhorn Slough [6], Carmel River [10]
Poaceae Bermuda grass Cynodon dactylon SCL, SCR, MON, SBT, SLO, SB Santa Lucia Conservancy [12], ESF/ESNERR Elkhorn Slough [6]
Poaceae Perennial veldtgrass Ehrharta calycina * SCR, MON, SLO, SB BLM, ESF/ESNERR Fort Ord National Monument [5], Elkhorn Slough [6]
Poaceae Panic veldtgrass Ehrharta erecta SCL, SCR, MON, SLO, SB CA State Parks, MPRPD, ESF/ESNERR Point Lobos SNR [1], Palo Corona Regional Park [7], Elkhorn Slough [11]
Poaceae Tall fescue Festuca arundinacea SCL, SCR, MON, SBT, SLO, SB BLM Fort Ord National Monument [5]
Poaceae Italian rye grass Festuca perennis SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Poaceae Velvet grass Holcus lanatus SCL, SCR, MON, SLO, SB BLM, ESF/ESNERR Fort Ord National Monument [5], Elkhorn Slough [6]
Poaceae Foxtail barley Hordeum murinum SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Marina Dunes Preserve [8]
Poaceae Mexican feathergrass Nassella tenuissima SCL, SCR, MON, SBT, SLO, SB Santa Lucia Conservancy [12], BLM Fort Ord National Monument [5]
Poaceae Kikuyu grass Pennisetum clandestinum SCR, MON, SLO, SB CA State Parks, BLM, MPRPD Point Lobos SNR [1], Fort Ord National Monument [5], Palo Corona Regional Park [7], Marina Dunes Preserve [8]
Poaceae Fountaingrass Pennisetum setaceum SCL, SCR, MON, SLO, SB Santa Lucia Conservancy [12]
Poaceae Harding grass Phalaris aquatica SCL, SCR, MON, SBT, SLO, SB CA State Parks, BLM, ESF/ESNERR, MPRPD Point Lobos SNR [1], Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7]
Poaceae Annual blue grass Poa annua SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Poaceae Rabbitfoot grass Polypogon monspeliensis SCL, SCR, MON, SBT, SLO, SB MPRPD Marina Dunes Preserve [8]
Poaceae Smooth cordgrass (ST) Spartina alterniflora
Poaceae Puna needle grass Stipa brachychaeta * MON, SLO, SB
Polygonaceae Devil's thorn Emex spinosa (ST) SB, SLO
Polygonaceae Japanese knotweed Fallopia japonica (ET, ED) SCR, SLO
Polygonaceae Common sheep sorrel Rumex acetosella SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR, MPRPD Elkhorn Slough [6], Marina Dunes Preserve [8]
Polygonaceae Curly dock Rumex crispus SCL, SCR, MON, SBT, SLO, SB ESF/ESNERR Elkhorn Slough [6]
Pontederiaceae Common water hyacinth Eichhornia crassipes (ET) SCR, MON, SLO, SB
Rosaceae Wooly cotoneaster Cotoneaster pannosus SCL, SCR, MON, SBT, SLO, SB MPRPD Palo Corona Regional Park [7]
Rosaceae Himalayan blackberry Rubus armeniacus SCL, SCR, MON, SBT, SLO, SB BLM, ESF/ESNERR, MPRPD Fort Ord National Monument [5], Elkhorn Slough [6], Palo Corona Regional Park [7]
Scrophulariaceae Woolly mullein Verbascum thapsus SCL, SCR, MON, SBT, SLO, SB MPRPD Palo Corona Regional Park [7]
Scrophulariaceae Wand mullein Verbascum vigatum SCR, MON, SLO, SB BLM Fort Ord National Monument [5]
Solanaceae Tree tabacco Nicotiana glauca SCL, SCR, MON, SBT, SLO, SB RCDMC Salinas River [13]
Tamaricaceae Smallflower tamarisk Tamarix parviflora SCL, SCR, MON, SBT, SLO, SB RCDMC Salinas River [13]

References

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 Point Lobos State Natural Reserve Existing Conditions and Resources Inventory Report
  2. Fort Ord Dunes State Park General Plan and Environmental Impact Report
  3. Marina State Beach General Plan
  4. 4.0 4.1 4.2 Moss Landing State Beach General Plan
  5. 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 5.25 5.26 5.27 5.28 5.29 5.30 Controlling Invasive Species on Fort Ord National Monument: Finding Weeds While Avoiding Bombs
  6. 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 6.23 6.24 6.25 6.26 6.27 6.28 6.29 6.30 6.31 6.32 6.33 6.34 6.35 6.36 6.37 6.38 6.39 6.40 6.41 6.42 6.43 6.44 6.45 6.46 6.47 6.48 Weed Control by Species: Elkhorn Slough National Estuarine Research Reserve
  7. 7.00 7.01 7.02 7.03 7.04 7.05 7.06 7.07 7.08 7.09 7.10 7.11 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19 7.20 7.21 7.22 7.23 7.24 7.25 7.26 Invasive Weed Management Plan for Palo Corona Regional Park
  8. 8.00 8.01 8.02 8.03 8.04 8.05 8.06 8.07 8.08 8.09 8.10 8.11 8.12 8.13 8.14 8.15 8.16 Dune Habitat Restoration Plan, Marina Dunes Preserve
  9. 9.0 9.1 9.2 9.3 9.4 9.5 9.6 Santa Lucia Conservancy Invasive Weeds
  10. 10.00 10.01 10.02 10.03 10.04 10.05 10.06 10.07 10.08 10.09 10.10 10.11 10.12 Carmel River Watershed Stewardship Manual
  11. 11.0 11.1 Elkhorn Slough National Estuarine Research Reserve Final Management Plan 2007-2011
  12. 12.0 12.1 12.2 12.3 12.4 12.5 Invasive Plant Management on The Santa Lucia Preserve: A Landowner’s Guide
  13. 13.0 13.1 13.2 Salinas River Invasive Plant Control and Restoration Program

Links

State-wide resources

County/region-wide resources

Guidance documents for management of parks/open space in the Monterey Bay area (north to south)

Disclaimer

This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessarily reflect the opinion or policy of CSUMB, its staff, or students.