appearances arid Cacti cactus clumps clusters coloring colors colouring colours display edge edges flora garden garden-display garden-plants irregular leaves light ornamental perennials plants pointed protection shape shapes sharp short-spikes small-spines spikes spines spiny succulents surface surfaces textures unusual abstract appearance backdrop background bright colored coloured contrast contrasting cream dark decorative distinctive evergreen foliage green growth hardy horticultural horticulture leaf leafy mature-leaves nature patterned patterns shadows sunlight sunshine