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.
Crape Myrtle Choices. Crape myrtle cultivars range in height from a tiny 18 inches to an enormous 40 feet. Most plants are in the 15- to 25-foot range and may be considered either a large shrub or small tree. Often crape myrtle grows as a multistemmed small tree, with foliage limited to the upper half of the plant.As a general rule of thumb, plant crape myrtles of this mature size a minimum of 8 to 10 feet from a building wall, and farther if you can. This spacing gives the plant room to expand to its full size.maller cultivars of crape myrtle can be planted in groups to use as a hedge or screen. Some of these grow to a compact 3 feet tall and can be planted three feet from a building wall.