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 adaptable ants Asiatic lilies Asiatic lilium blooms bright brown bulb bulb flower color colorful colour colourful easy-growing flowering bulbs flowers green herbaceous herbaceous flowering plants hybridized hybrids lilies lilium ornamental lilies speckled spotted stamens tolerant trumpet-shaped upright variations varieties vigorous yellow