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.
Also, you'll need to check the pH of your soil; while blueberries can thrive in soils with a pH as high as 5.2, a pH between 4.6 and 4.8 is optimal. â¢ Dig holes about 2 feet deep and 1 foot in diameter.If you're planting several bushes, place them in a row with about 4 feet between each plant.lso, you'll need to check the pH of your soil; while blueberries can thrive in soils with a pH as high as 5.2, a pH between 4.6 and 4.8 is optimal. â¢ Dig holes about 2 feet deep and 1 foot in diameter.