Hopefully, this will do it for ya, Jen. when I get irritated intestinal lining I take a huge dollup pf slippery elm bark, basically a heaping tablespoon full in a cup of hot water. It turns into a goo, but it really does the trick for me. Perhpas it would help you too??
have you tried california lilac--ceanothis--there are three varieties, 2 bushy kinds and a crawling kind. they do well in so cal--the tolerate scorching heat well so long as they have water. the flowers are smaller but they are lovely.
here's a pic--http://members.shaw.ca/pctpictures2/ceanothusVictoria.htm