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.
Planting and Soil Preparation. The ideal time to transplant blueberry plants is during the dormant season (November â March). Blueberries require a lower soil pH than many other small fruit crops. These berries need acid soil, normally a soil pH of 5.3 or lower (pH range of 4.0 to 5.3).