abundance ageratum annuals appearance bedding bloom bloomimg blooms blue-billy-goat-weed blue-billygoat-weed borders chick-weed clusters color colored colorful colour coloured colourful containers cultivars cultivated edging exotic flora florets floss floss-flower flower flowers fluffy fuzzy garden-plants goatweed green greenery hardy leafy leaves potting-plants profusion purple rock-gardens round soft weed wild beautiful beauty branch bud Ceiba Ceiba speciosa madeira Malvaceae Malvales natural nature petal pink Pink flowers silk floss tree tree all-weather-space bark bottle-shaped bottle-tree branched ceiba-chodatii conservatory deciduous display displayed distinctive dome exotics floss-silk-tree flower-dome gardens Gardens-by-the-Bay glasshouse gnarled greenhouse grotesque horticultural horticulture indoors inside palo-borracho shape shaped shapes Singapore South-American stored-water subtropical surface surfaces swollen-trunk texture textures tropical trunk unusual utilitarian vegetation warty-tree