Long, erect, green stems branch near the top into several smaller stems which bear bright purple or lavender flowers which are tubular at first, before opening into six-pointed star shapes. These appear in late spring to early summer, opening gradually in succession to give a colourful display over a number of weeks. It is found in the wild on dry rocky bluffs and open woods, usually in heavy soil in the northern Coast Ranges, and the northern and central Sierra foothills of California, and also into Oregon up to 1,000 meters.
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