atmosphere boundary-walls brick-walls bricked-in bricks color colored colors colour coloured colours covered damp deteriorated deterioration discoloration discoloured embedded European-burial-ground faded fading ferns foliage Fort-Canning-Green Gravestones greenery growth headstones historic historic-cemetery-area history incorporated lichen lichens memorial memorial-walls mold mould old path Singapore steps tombstones walls weathered weathering worn appearance blooms bright colorful coloring colourful colouring composite-bloom curved display displayed flora flower-head flowering-shrub flowers full-bloom leaves leucospermum-cordifolium native nature patterns perennial petals pin-cushion-shape pincushion pincushion protea plants proteas shape shapes shrub Sizes South-African spring strange symmetry unusual unusual-shapes variations varieties variety wildflowers