Question
can i grow them in the Willamette Valley, Oregon

Answer
Dear Suzanne,

Yes, you can grow Crassula ovata and Sedum morganianum there (I think). I am not aware of your cultural requirements, but you can take a look at the information on growing at the cactus and succulent forum of Garden Web. Lots of Q&A there.

Let me know if you need more information.

Kind regards,

Jeff