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.
In areas with soil pH levels above 6.0, grow blueberries in large containers filled with a wood chip-or bark-based planting mixture. Spacing recommendations for growing blueberries range from 12 inches between plants for lowbush blueberries to 12 feet between saskatoons.Allow 4 feet between highbush blueberry plants and 6 feet between rabbiteyes. Set plants at the same depth they grew in their pots.Water thoroughly, and mulch the soilâs surface with at least 2 inches of acidic mulch, such as wood chips. Cut back to ground level all but the two most vigorous upright shoots.n areas with soil pH levels above 6.0, grow blueberries in large containers filled with a wood chip-or bark-based planting mixture. Spacing recommendations for growing blueberries range from 12 inches between plants for lowbush blueberries to 12 feet between saskatoons.