abundant appearance bunches cascades climber clusters colorful colourful cultivars deciduous vines fabaceae fast-growing flora flowers fragrant green hardy heavy-wooded invasive mauve pea family pendulous plants purple racemes scented vigorous vine vines violet white wistaria wisteria woody woody plant building creeper deciduous faded façade frontage historic leafless limestone old overgrown ridges roof sign surfaces tangled tangles textures top wall worn abstract attached background bark branches brown dead dry entwined ivy layers long natural nature perspectives plant rough sepia stem stringy tangle thick thin tree trunk upright wood all-weather-space Apocynaceae caudex caudiciform-plant conservatory display displayed distinctive dome exotics fat-twisted-roots flower-dome fockea-edulis gardens Gardens-by-the-Bay glasshouse gnarled greenhouse grotesque ground-level horticultural horticulture Hottentot-bread indoors semi-deciduous shape shaped shapes Singapore South-Africa-native succulent surface texture unusual utilitarian vegetation vine-branches