appearance 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 amazon amazonas blue Bolivia jungle nature rainforest red sky south america bloom branches Davidia involucrata England garden natural petals plant pocket handkerchief spring tree white circles discs green leaf leaves lily pads pond water cracks decay decayed layers mortar old paint shadow string sunlight wall butterfly insect Moths and butterflies nectar pink pollinator Swallowtail butterfly zinnia