Artichoke thistle seeds can be spread through a variety of different ways, including strong winds, birds feeding and knocking seeds to the ground, water running down slopes, and attaching to mammals as they make their way through native wildlands. The artichoke thistle’s density and deep taproot outcompetes native plant species for light, water, and nutrients, threatening the health of natural habitats.

For more information about the Irvine Ranch Natural Landmarks, visit IRConservancy.org or follow the Landmarks on Facebook, Instagram and Twitter.