Black mustard overruns trail. Invasive black mustard (Brassica negra) overran long sections of trail at Zuma and Trancas Canyons.

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Keywords: america, american, angeles, area, black, conservation, country, history, invasive, land, lands, los, monica, mountains, mustard, national, natural, nature, park, parks, plants, preserve, public, recreation, restore, santa, service, urban, usa, widlife, wilderness, zumacanyon