bee bumblebee collecting Dandelion flower green insect meadow pollen spring yellow garden Iberis purple shallow DOF summer sunny sunshine working flying garden insect hover fly in flight autumn close-up Corylus filbert flowering hazel nature plant tree twig bush germany Harz mountain perennial rock stalk stone background carton color decoration flowers Ladybird ladybug old paper texture wallpaper close up dahlia pink vivid white background brightly-coloured brown carpeting-plants clump-forming clumps coloration colored colorful colors colour coloured colourful colours common contrast contrasting daisy-like drought-tolerant environmental-weed garden-flowers gazania gazanias golden hardy introduced-species invasive low-growing plants prolific rapid-spreader resilient roadside-weeds South-African streaked tough water-wise weed widespread wind-blown-seeds winter