Oh my gosh--- a high school science field trip is flashing back to me--
No they dont grow all over the place-----I'm thinking slightly higher elevations----I know they grow in my local Santa Cruz Mts etc
I know that you can buy pieces at pet stores and I'm sure a few other hobbie shop type stores too
I'm sure you can find more info online somewhere----?
sorry my mind is drawing a big blank-----as for the science field trip--- no thats wasnt a dead rattle snake lying on the road--- it was alive and well sunning itself-----------now that I will never forget