HIBBERTIA. Mostly Australian shrubs of matting to vining habit, with attractive evergreen foliage and cheery 5 petalled, usually bright yellow blossoms. Unfortunately, many are too tender for most northern California climates, but there are some happy exceptions. The following delight in a sunny site with well drained soil (an exposed bank is ideal) and moderate to occasional watering when established. They are hardy to around 20oF.
aspera. A variable shrub, low and mounding in this form received from Kathy Musial. I would expect it to be under 2 high and 4 or more broad at maturity. It has dark green, narrowly oval leaves and a nearly constant sprinkling of bright yellow flowers, though it blooms most heavily in spring. It seems to be one of the least touchy of the group.
pedunculata. An erect to prostrate, slender stemmed shrub with narrow, nearly heath-like leaves. This unnamed cultivar is prostrate and closely branched. It is dotted much of the year with brilliant yellow flowers, about 2/3" across.
vestita. This unnamed cultivar is one of the prettiest plants yet received from the U.C. Santa Cruz Arboretum. It makes a low, spreading carpet with short, profusely branched stems and tiny oval, dark green, shiny leaves. Bright yellow 1" blossoms nestle among the foliage for several weeks each spring (blooming may also be repeated in fall).