abundant angles appearances castor-beans castor-oil castor-oil-plant castor-seeds cluster clusters common cotyledons Euphorbiaceae fast-growing flower flowers foliage highly-toxic inflorescences invasive large large-leaves leaf leaves medicinal palm-of-Christ palma-Christi poison poisonous ricinus-communis seed-pods seedhead shrub shrubbery spiky-green-seed-capsule spiny surface surfaces textured textures toxic toxins vegetation wasteland-weed weed widespread appearance attractive background beautiful bloom blooms breath-of-heaven buchu bush clip coleonema-album color colorful colors colour colourful colours confetti-bush covered diosma fine flora floral flowering flowering-shrub fragrant garden-shrub green greenery hardy hedge-plant in-flower mass-flowering prolific prune pruning-friendly small-flowers soft-hedge sun-loving texture white-flowers arid Australia Australian blood-red clianthus-formosus coloration colored coloured contrast creeper creeping-plant creeping-vine crimson emblem emblematic fabaceae floral-emblem glossy ground-cover light native pea-family perennial petals scarlet shade slow-growing South-Australian-emblem Sturt's-desert-pea sunlight sunshine swainsona-formosa wildflower willdampia-formosa ‘flower-of-blood' all-weather-space angled atmospheric-humidity botanical-gardens cloud-forest columnless-glasshouse conservatories conservatory conservatory-complex construction controlled- temperature cooling curved curves curving dome domes energy-efficient flower-dome gardens glass glasshouse greenhouse heating high-tech horticultural horticulture hothouse indoor-gardens lighting optimized-conditions plants regulated-climatic-conditions Singapore steel structure sustainable-building-technologies transparent ventilation visibility warm-growing-environment windows against animals art artwork ball bird birds black black and white branch branches cartoon circle cloudless contour cool copyspace creative decoration drawing elegance evening graphic illustration light on water monotone moon moonrise nature night object outline painting reflection ripple ripples seated shine sign silhouette sit sketch sky solitary spring stem summer symbol tail tree twigs vector wallpaper waterscape