April 11, 2025 Wintercress (Barbarea vulgaris). The lighter yellow flowers in this photo. Native to Eurasia and Northern Africa and invasive. The darker yellow blooms on the left are Roundleaf Ragwort (Packera obovata)(native to Virginia), and the orange in the lower right corner are California Poppy (Eschscholzia californica)(native to California and the northern part of…