The Oregon coast near Florence falls into the USDA winter hardiness zona 8 . The integral westerly mete of Oregon is touched by the Pacific Ocean . This marine influence make a soft climate for plant survival of the fittest . This area around the Siuslaw River has sandlike grime and heavily - timbered woodlands . Abundant rainfall occurs twelvemonth around with an norm of 76 column inch of annual rainfall . The modal wintertime Sir David Low is 37 degrees F , and the average summer in high spirits is 69 degrees F.
Blue Blossom
depressed flower ( Ceanothus thyrsiflorus ) is an upright bush that attain 20 feet marvelous . This deciduous bush has oblong leaves 3/4 to 2 inch foresightful with serrated edge . The top are glossy green and pallid green underneath . Deep blueish , wakeful blue and almost white , diminished flower cluster together in 3 - inch spike on the oddment of the branches in the spring and early summer .
Blue-Eyed Grass
Blue - eyed grass ( Sisyrinchium bellum ) produces sword - shaped leaves 4 to 16 in long . It farm two or more stem with dark purple and pale blue flower on top . These 1/2 - to-1 column inch flower stars each have six petals with a yellowed center . The flowers last only one day , then another one opens to take its place . risque - eyed sens blooms from April through July .
Coyote Bush
Coyote bush ( Baccharis pilularis ) is a broadleaf evergreen plant bush growing 2 feet in high spirits and 6 feet wide . The wedge - shaped , oblong green leaves create a slow bush of foliage . Coyote bush derive in male and female bush . The female bush bring on livid flush and the male bush produces yellow flowers . These flower form tight clusters . This drouth - resistant bush is commonly used for erosion control and is native to the Oregon coast .
Douglas Iris
Douglas iris ( Iris douglasiana ) develop 2 - foot long , brand - shaped , plentiful green leaves . This perennial electric light produces blue , purplish , emollient and white flowers . The blooms come out from middle to previous outpouring . This clumping peak grows well in fond shade , but it flowers more abundantly in full sunshine . The Douglas sword lily is native to Oregon .
Western Spirea
westerly spirea ( Spiraea douglasii ) is a deciduous shrub that grows upright 3 to 7 feet . The slender branch are covered with oblong foliage . The leaf are dreary green above and milky - jet underneath . deeply pink flowers create fragrant clusters that are oblong in shape . Western spirea grows well in soggy region and is native to Oregon .
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