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.
â¢ Blueberries grow best in acidic soils with a pH of 5.0. â¢ Incorporating rich organic matter into the soil or as a top dress is ideal. â¢ If planting a row of blueberries (space plants 4-8 feet apart), consider hilling the plants; raise them above the natural soil level by 12-18 high and 3' wide.