Can we grow Milkweed in Sacramento, California?

Question

We have a small yard and want to attract some butterflies.

Answer 1

Milkweed pretty well grows everywhere. The Monarch butterflies love it. Parts of the plant is poison if eaten but the butterflies use it a method of defense because it makes them toxic to other insects and birds.

This plant has been said to grow in the following regions:
Sacramento, California
http://davesgarden.com/pf/go/110313/