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.
Planted my 4 Hybrid Poplar trees about 5 years ago. 1 is about 40 feet high, 2 are about 30 feet high and one is inching along at about 18 feet. I love the trees, they provide great shade in much needed areas and I love hearing the wind through their leaves.Very easy to maintain.lanted my 4 Hybrid Poplar trees about 5 years ago. 1 is about 40 feet high, 2 are about 30 feet high and one is inching along at about 18 feet. I love the trees, they provide great shade in much needed areas and I love hearing the wind through their leaves.