Requesting plant ID. If this behaves like an invasive plant, I would like to get rid of it. The leaves are wide, about two feet or three tall in total, almost like an iris, but the flowers don't look like the iris. The flowers look more like those of blue-eyed grass in size and color (which I have in a different location), but are different in details. I didn't plant this, but it appeared and a squirrel may have brought the bulbs or seeds from neighbors. I see this growing in at least four or five different spots in the backyard.
Location: USA, California, San Francisco Bay Area, Zone 0-11.