CONGRATULATIONS ON A CONSERVATION VICTORY!
Friends of Harbors, Beaches and Parks recently celebrated the finalization of the Orange County Transportation Authority’s Natural Communities Conservation Plan and Habitat Conservation Plan. A lot of time, energy and commitment by many individuals, elected officials, organizations (including OCCNPS), and agencies made this program so successful. Congratulations to everyone involved! Details of the Plans and how they came to be:
CNPS POLICY ON HERBICIDE USE
CNPS has two policies that cover herbicide use as a tool for controlling the spread of non-native plants into and within native wildlands. (CNPS, 2008. Herbicide Policy, Integrated Weed Management Policy, cnps.org) The main concern of both policies is that the control work be done in a manner that avoids injury to any native vegetation, hence to the biodiversity of our native ecosystems. Neither policy addresses the use of herbicides in non-wildlands, i.e. home or public landscaping or agricultural lands.
The policies call for the use of Integrated Weed Management (IWM), which requires:
In 2016 the City of Irvine adopted an Integrated Pest Management Program that is essentially IWM broadened to include animal pests. However, the program includes blanket restrictions on the use of synthetic-based herbicides on city lands, including in its natural open space/wildland areas. Other OC cities are considering adopting similar programs, and looking to Irvine’s experience with its program.
A recent report on the results of a year of this regimen in Irvine revealed that the allowed organic-based herbicides are mostly ineffective against tough weeds such as bindweed, nutsedge, artichoke thistle and castor bean. The report comments that significant progress had been made, over the previous 10 years, against proliferation of invasive weeds using the synthetic-based herbicides allowed under the previous regimen. The organic-based herbicides now allowed will require more frequent applications to maintain any control of such weeds.
OCCNPS’ position on herbicide use follows CNPS’ Policies:
—Celia Kutcher, Conservation Chair
Native Gardener’s Corner - Members’ Tips, Tricks, and Techniques This column is a regular newsletter feature offering chapter members and local experts a chance to briefly share information on many things related to gardening with natives. The question for this newsletter is: “What are your three ‘Go-To’ native plants when designing or renovating your garden?”
Leon Baginski – “Malosma laurina, Rhus integrefolia, Rhamnus cultivars. Rhus is very drought friendly, Rhamnus grows fast and takes well to pruning and Malosma has interesting fragrance and when in bloom attracts multitudes of pollinators. Can't go wrong with these three but Catalina Cherry is also so easy.”
Susan Krzywicki – “St. Catherine’s Lace (Eriogonum giganteum), Coyote bush (Baccharis pilularis ‘Pigeon Point’) for slopes and “wall-to-wall shag carpeting”, Verbena lilacina ‘De la Mina’ for color.”
Laura Camp – “Buckwheat, Manzanita, and Dudleyas.”
Rama Nayeri – “My 3 ‘go to’ native plants that I have had lots of success with over the past year are Cleveland Sage, Catalina Silverlace, and Seaside Daisy.”
Greg Rubin - “Although I use hundreds of different species, selections, and cultivars, if I had to narrow it down to just a few plants that occur in almost all of my gardens, I would say Salvia 'Pozo Blue', Arctostaphylos 'John Dourley', and Baccharis 'Pigeon Point' are three of the most common. But I am also trying to call attention to a few native plants that are fantastic performers but are little used, such as Forestiere neomexicana (pubescens) - Desert olive; Ceanothus 'Heart's Desire’ - groundcover wild lilac; Constancea nevinii - Catalina silver lace; and Tetraneuris acaulis - Angelita daisy.”