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That patented adhesive has already been commercially used for production of wood composite panels by Columbia Forest Products , the largest producer of decorative interior panels in the nation . The wall 's decorative design , which echoes the Flatirons behind it , will act as a signal for people to slow down and uses materials such as flagstone and river rock to draw attention to community assets nearby . Northern Engraving manufactures nameplates and other industrial decoratives using plastic and aluminum as primary substrates . Some bear beautiful flowers in spring or summer ( honeysuckle , clematis , wisteria ) , some produce attractive fruit that may be edible to birds ( Virginia creeper , moonseed ) or people ( grapes , hardy kiwi ) , or remain decorative through much of the fall and winter ( bittersweet , hops , some clematis ) . Double-flowering dahlias include cactus ( tubular petals that curve backward for more than half their length ) , semicactus ( similar to cactus except the petals are broad at their base and curve for less than half their length ) , decoratives ( broad pointed or rounded petals , irregularly arranged ) , ball ( ball shaped flowers over 2 inches in diameter ) , and pompons ( ball shaped flowers less than 2 inches in diameter ) . The multiple use of the same geometric shape was not only decorative , but demonstrated how a painting could show movement .