What are the plants that line most of the southern California freeways called? They look similar to Oleander.?

but are slightly different and I believe they do not flower.

What are the plants that line most of the southern California freeways called? They look similar to Oleander.?
The State many years ago planted a cultivar of the oleander to separate directional traffic on the highways, freeways %26amp; interstates. The crews for many years annually (or less) go out to trip %26amp; clean up the plants. Unfortunately, many critters live in these plants (spiders for one) as well as the dust, leaves %26amp; flowers being toxic. So, the State is (very, very slowly) removing them %26amp; replacing with concrete %26amp; wood barriers.
Reply:Cannabis , but don't tell anyone :))
Reply:they are possibly Gordian's
Reply:I think they are Bougainvillea.