Basic structure of dicotyledonous stem-Sunflower stem. Inner structure of dicotyledonous stem reveals epidermis, cortex and stele. Epidermis. Epidermis is protective in function and creates the outermost layer of the stem. Epidermis is a single layer of parenchymatous rectangular cells.
Culture. Plumbago is propagated from cuttings in the summer, but you can also grow it from seed. Plant plumbago in light, sandy, well-drained soils, spacing each shrub 36 to 60 inches apart to allow room to grow. If spaced properly, blue plumbago will naturally cascade in a fountain shape.
Fruit: Natal plums are 2 red berries. Size: The natal plum shrubs grows 2-8' tall. Hardiness: Zones 9-11. Use protection in Zone 9 winters. It will usually come back in Zone 9 if it freezes. Propagation: Cuttings, seeds. Uses: The natal plum can be made into jams and jellies.