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.
Blue Grama is a major warm season perennial tufted grass, growing 1 to 2-1/2 feet in height on slender stems (culms). The leaf blades are very narrow, up to 0.1 inch wide (1 to 3mm) and 1 to 6 inches (15cm) long. Most grow near the base of the plant. Blade veins are parallel and distinct.