Looks like Asiatic Dayflower, Commelina communis. The link is a google search of the plant.

Here is a link that might be useful: Asiatic Dayflower

I'm pretty sure that's Asiatic Dayflower. It's very invasive here in GA - one plant comes up, and the next thing you know it's everywhere in the area. When you try to pull it, if you leave even one little piece of root it will come back out. And when you pull it out, the plants have to be left in the sun to bake for a while or tied up tightly in a trash bag before you throw them out, because otherwise they'll revive in the dumpster or compost pile and come back out. I don't know how bad it is in CA, but whenever I see it starting here I dig it up and make sure it's dead.

Here is a link that might be useful: Dayflower: A Weed to Watch?

Thanks so much! I was having a tough time finding it on my own. I'll remember these forums and hope to participate again.

Sincerly
Yvonne

Clearly a Commelina, but it doesn't look like the Commelina communis that I've seen, those having longer, narrower leaves that are pointed at the tip, as well as generally being much larger plants than your pictures seem to indicate.

A search on the USDA PLANTS Database also shows that Commelina communis isn't reported to occur in California. Only one species is reported in California, Commelina benghalensis, which is listed as a noxious weed by the state of California. So presumably that's what you have. I've linked a web page (from Hawaii) with information about that species, which has pictures showing that the leaf shape matches yours closely.

Patrick Alexander

Here is a link that might be useful: hear.org: Commelina benghalensis