branches branching Cacti cactus coloring colors colouring colours dangerous display edges fine flora flowering fruiting garden garden-plants green irregular leaf light long multiple-branched perennial pointed points prickles Prickly protection protective risks shadows shape shapes sharp skin soft-wooded-perennial spikes spination spines spiny succulent sunlight sunshine surface surfaces texture textures to-the-point autumn bio brown bush color fruit gold nature orange plant red tree twig yellow