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My mom has this plant in her coastal Southern California yard. She cuts it back to just about nothing every year and it grows back super healthy looking.
Here's a picture of its leaves and flower.
A Lamiaceae. But I don't know which one. There is a lot of aromatic herb in this family, yet don't try to eat it if you are not 200% sure what it is.
+1
Spurflower. I think it's a type of lavender. Grows like a weed in Southern California, like Borage in Northern California.
I think you're right. A page I found that shows what I think it is (a Plectranthus zuluensis) also calls it a spurflower. Thanks for the response.
PlantNet agrees
PlantNet wasn't giving me any real answer, but after responses on here I think you're right. It looks like a Plectranthus zuluensis.
That's definitely a Plectranthus, specifically looks like Plectranthus scutellarioides (formerly called Coleus) - they're super resilent and can be cut back hard each year, which is why your mom's plant thrives with that treatment.
After looking at photos, I don't think it's a Plectranthus scutellariodes, but a Plectranthus zuluensis. Thanks for the direction, my phone app was coming up with nothing.
Looks like a kind of friendship sage, but the flowers are wrong. Some type of sage for sure.