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.
Plant the lilacs about 12 feet or more from the foundation to avoid worry. Lilac roots aren't invasive though they can ramble and lilacs need room to grow in all directions. The roots are about one to one-half times the length of the branches. A 10-foot shrub would have roots about 15 feet in every direction.irst time growing a drawf lilac tree/bush and this year it has what looks like seeds, when do I pick the seeds and how and when do I plant them. This drawf is 3 years old and has about ten 18 suckers growing I want to transplant them but need advice too.