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.
Step 1. Take cuttings from dormant blueberry plants in the early spring. Find hardwood shoots (growth from the previous year) that are a quarter-inch in diameter with leaf buds present. Cut 1- to 3-foot-long shoots from the parent plant just above the plant crown.tep 10. Leave the cuttings to grow in the rooting structure throughout the summer, autumn and winter (replace the plastic or glass securely around the cuttings to insulate them from the cold). Transplant the cuttings the next spring, planting them in the soil with a spacing of approximately 1 foot between each plant.