garden green nature plant plants purple small succulent succulents appearance cluster clustering-succulent distinctive five-petalled flower flowering foliage hardy indoor-plant mottled outdoor-plant perennial pot-plant stapelia-variegata star-shape star-shaped starflower sturdy variable variations variegated variety various abstract bright budding buds Cacti cactus closed dark decorative flowers garden-plant light open opening petals red shadows sunlight sunshine acuate aloe barbed barbs beaked botanic garden botanics cosmetic cosmetics glasgow medcal peaked pointed sharp spikey spiky succulence thorn thorns fleshy leaves spiny flowerpot houseplant pot banana leaf greenery potplant tendril