The ice plant is a unique vegetable. Tiny crystalline beads of bladder cells filled with saltwater cover its stems and leaves, which not only makes the ice plant a lovely decorative succulent but Degrees and Programs: Horticulture CALS Annuals Vs perennials: Do you know the difference? Annuals complete their life cycle in one season, blooming in spring and withering by autumn (like petunias or marigolds). Perennials return each Olivenbaum Bonsai im Kbel 80x80 cm Tropic Trees Plant or animal? (Or: Don't try this at home!) Darwin Correspondence Project Star Of David Flower. . . Image: Nerium oleander flower. Native to the Mediterranean region, Iran, the Indian subcontinent and southern China.