This is a flower that grows all over our property during spring, but I accidentally missed it last year when distracted by other flowers and then I thought I'd taken pictures already...by the time I realized that I didn't have any pictures of this one, all of them had faded away. So I made sure to get pictures this year as soon as I saw them bloom! :D

From Wikipedia:
Plagiobothrys tenellus is a species of flowering plant in the borage family known by the common name Slender Popcorn Flower. It is native to western North America from British Columbia to Mexico, where it is a common member of the flora in several types of habitat.