annual Asteraceae color colored coloring colors colour coloured colouring colours companion-planting cultural-significance flora florets flowers garden garden-flowers garden-marigolds garden-plants golden good-fortune good-luck herbaceous-plants historical horticulture marigold marigolds orange perennial pungent red ruffled-petals sunflower-family symbolic symbolism Tagetes varieties variety yellow appearance Australia Australian brown bush central central-Australia contrast contrasting descriptive distance distant drought dry dry-brown-land flat grass grasses hardy hilly light outback perspective perspectives river river-bed rocks rocky rough sand sandy scrub shrubbery shrubs slope slopes sloping survival trees vegetation waterless appearances arid Cacti cactus clumps clusters display edge edges frilled frills garden-display green irregular leaves ornamental perennials plants pointed protection ribbed ribbing ribs shape shapes sharp short-spikes small-spines spikes spines spiny succulents sunlight surface surfaces tall textures unusual abstract architectural backdrop background barrier brick brick-wall bricks brickwork cement constructed dark exterior external firm linear lines merger merging mixed mortar secure security smooth solid standard strength strong style surfaced texture textured variation varied various wall wallpaper