abstract bright budding buds Cacti cactus closed cluster clustering-succulent dark decorative distinctive flowering flowers garden garden-plant light open opening outdoor-plant perennial petals red shadows succulent succulents sunlight sunshine variable variations variegated variety various appearances arid clumps clusters colorful coloring colors colourful colouring colours contrast contrasting display edge edges flora garden-display garden-plants green irregular leaves ornamental perennials plants pointed protection shape shapes spiky surface surfaces textures unusual