I photographed this plant in UCDavis Arboretum. It is commonly planted throughout the arboretum's mediterranean section.
I was wondering which salvia it is. It forms a really big shrub with a thick woody base, in diameter the whole plant reaches more than 4 feet in flower. It sends up long flower spikes in spring that reach a hieght of 5-6 feet and create a 'cloud' of big blue dangling flowers around the plant, whereas the foliage remains on the lower part of the plant.
From what I've found it seems like S.interrupta but the size of the plant and flowers are too big comparing to descriptions I've read for it.
Can somebody help?
Here is a link that might be useful: