appearances arid Cacti cactus clumps clusters colorful coloring colors colourful colouring colours display edge edges flora frilled frills garden-display garden-plants green greenery irregular leaves light ornamental perennials plants pointed protection ribbed ribbing ribs shape shapes sharp short-spikes small-spines spikes spines spiny succulents sunlight surface surfaces textures unusual variations variety abstract architectural architecture backdrop background barrier basic brick brick-wall bricks brickwork color colored colour coloured constructed exterior external linear lines mortar perspective perspectives secure security smooth solid standard strength strong style surfaced texture textured traditional-brick-wall variation varied various wall walled wallpaper well-built balcony cement Rendered rough windows firm corner rectangular clean angles curved curving barrel barrel-cactus round tall appearance Australia Australian brown bush central central-Australia contrast contrasting descriptive desert-country desert-region distance distant drought dry dry-brown-land far foliage gravel ground hills hilly hot inland outback outcrops road rocks rocky rugged scrub shrubbery sky sunshine terrain trees vegetation