Looks like now would be a good time...

https://edis.ifas.ufl.edu/vh021

I planted some Scarlet Runner Bean seeds and some seedlings in early September. They all died. I see that you are in coastal zone 9b too. Have you tried growing Scarlet Runner Beans? How did they grow for you?

Haven't tried in years. They didn't do well back then.

Complete failure here in 9a. Tried three times with two sets of sees. They'd come up, grow very slowly, then just die. Friend said she tried to grow them in containers, same thing.

I usually have better luck w runner beans in the dry years than the really wet ones. Right now is probably a good time as it has been a little dryer and a little cooler.

I planted a few Sunset Runner Beans yesterday. I have a few raised beds with trellises down the center to hold up the tomatoes and eggplants etc. I planted some peas in the middle and the runner beans on the far end so maybe they can climb along the very tops of the trellises.