appearance black brightly-coloured carpeting-plants clump-forming clumps color coloration colored colorful colors colour coloured colourful colours common daisy-like drought-tolerant environmental-weed flower flowers garden flowers garden-escape gazania gazanias golden hardy introduced-species invasive lance-shaped-leaves low-growing orange perennial plants prolific rapid-spreader resilient roadside-weeds South-African streaked tough vivid water-wise weed widespread wind-blown-seeds yellow Begonias blotched blotches blotching contrast decorative distinctive diverse exotic fancy-foliage fancy-leaf foliage herbaceous leaves ornamental patterned perennials shade shaded shady shape shaped shapes showy-foliage subtropical surface surfaces surfacing tactile texture textured textures tropical varied variegated varieties variety