If you live in Southern California, you’re probably familiar with the ubiquitous black mustard plant. Every spring, its bright yellow flowers blanket our hillsides, freeway medians, parks—basically, anywhere there’s a patch of dirt, mustard will grow. It’s a plant that thrives in disturbed areas—and unfortunately, it often disturbs the habitat around it, too. Considered invasive…
![](https://www.treepeople.org/wp-content/uploads/2024/06/flowerdistrict_2024_may_4_V1-4.jpg)