Appearance
''Penstemon fruticosus'' is a spreading, semi-evergreen shrub up to 40 centimetres tall. The flowers are tubular and pink, lavender, or purple.''Penstemon fruticosus'' is included in ''Penstemon'' subgenus ''Dasanthera'', along with ''P. barrettiae'', ''P. cardwellii'', ''P. davidsonii'', ''P. ellipticus'', ''P. lyallii'', ''P. montanus'', ''P. newberryi'', and ''P. rupicola''.
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