So we're walking over the mulch, around the plants, around the chaparral.
There's some sage.
Two...
California poppy.
California poppy.
Santa Barbara milk vetch.
I'm Molly Bentley, and you're listening to the documentary from the BBC World Service.
Well, I mean, I think what you see right now is that there's a handful of colors
that pop up here on top of the structure right now.
There's obvious ones like the California poppy.
You've got that kind of beautiful...
Orange-yellow cupped flower and these delicate little stems, you know,
and little kind of carrot-esque foliage underneath.
Now, it may sound like landscape architect Robert Rock is giving me a colorful tour of native California plants,
but there's something special about the flowers we're seeing.
I think the thing that I'm most surprised by right now is just how well the sage has taken to this site.
It's got this kind of dusty green color.
And these delicate leaves, and obviously the smell of sage is something that I think everyone knows quite well.
These plants are growing over 10 lanes of freeway traffic on the Wallace
Annenberg Wildlife Crossing on the outskirts of Los Angeles, California.