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The Dirty Dozen Exotic Plant Species in the Rose Creek Watershed
The Rose Creek Watershed Opportunities Assessment will include a plan to eradicate major infestations of exotic species in the watershed; the primary focus of this effort will be on the largest landholdings, primarily the publicly owned lands. The plan will encourage the City of San Diego, CALTRANS, SDG&E, MTDB, the Marine Corps and other agencies to join together, and with individual private property owners, to step up the eradication of these pests. Click here for more information on Southern California Pest Plants.
Private property owners have an important role to play in improving the health of the watershed as many of the “seed sources” of these pests are found on private lands; seeds are blown or carried by wildlife into the public lands, complicating eradication efforts.
You may have some of the Dirty Dozen in your yard, perhaps planted at a time when less was known about the detrimental impacts of these species on native wildlife. While there are many more than a dozen invasive exotic species causing problems in the Rose Creek Watershed, removal of these Dirty Dozen plants will make a significant improvement in the health of the watershed.
Removal of the Dirty Dozen and other exotic invasive species from your property will make a huge difference in the health of the Rose Creek Watershed. The California Invasive Plant Council (Cal-IPC), has developed a Weed Workers Handbook to help you. Additional information is later found on the CAL-IPC site. For those wanting to go beyond the Dirty Dozen, the California Native Plant Society has developed a broader list of Weeds in San Diego County Wildlands which will also prove helpful.
Dirty Dozen Invasive Exotics in the Rose Creek Watershed
| Grasses: |
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Pampas, Cortaderia selloana |
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Jubata, Cortaderia jubata |
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Fountain Pennisetum setaceum |
|
Cheat, Bromus tectorum |
|
Veldt, Ehrharta calycina |
|
Foxtail chess, Bromus madritensis |
| Fennel, Foeniculum vulgare |
| Garland Daisy, Chrysanthemum coronarium |
| “Freeway” Iceplant, Carpobrotus spp |
| Palms: |
|
Mexican Fan Palm, Washington Robusta |
|
Canary Island Date Palm, Phoenix canariensis |
| Periwinkle, Vinca major |
| Ivy: |
|
English, Hedera helix |
|
Cape and German, Delairea odorate |
| Brazilian pepper, Schinus terebinthifolius |
| Thistles: |
|
Yellow Star, Centaurea solstitialis |
|
Tocalate, Centaurea melitensis |
| Mustard, Brassica tournefortii |
While not prevalent in the watershed due to previous eradication efforts,
there are some other invasive exotic pests should be removed as well:
Also Rans
Our thanks to the City of San Diego; Ed Ervin of Merkel and Associates, Dr. Susan Hector; Mike Kelly of the Conservation Resources Network; Carrie Schneider of the California Native Plant Society; Ben Stevenson of the Rose Canyon Recreation Council; Mark Woodworth with the Tri-canyon Weed Warriors; Tri-canyon park volunteer Joe Matista; landscape architect Kay Stewart; Dave Boyer of the Miramar Marine Corps Air Station, Natural Resources Division; The Nature Conservancy and the Friends of Rose Canyon for their help with the information in this section.
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