- The fast-growing, semi-woody shrub produces blue flowers almost year-round. Five-petal, phlox-like flowers form into 6-inch clusters and cover the plant. Plumbago auriculata flowers are light blue in color. The cultivar Royal Cape's flowers are a darker shade of blue. The plant forms into loosely branched mounds, growing up to 10 feet tall and wide. Its thin branches have an arching habit. The green foliage is oblong and 2 inches in length. Unless the plant withstands a severe frost or freeze, it remains evergreen all year.
- Gardeners can utilize blue plumbago in various areas of the garden. Its works well as a specimen, with its continuous habit of blooming. Use blue plumbago as a formal or informal hedge, mass plantings or in mixed gardens. The shrub is suitable in xeriscapes, due to its low-maintenance requirements. The fragrant flowers attract butterflies, making the plant a suitable addition in nature or butterfly gardens. Grow plumbago in a sunny location for the most blossoms. For proper growth and health, plant plumbago in slightly acidic, light soils that have good drainage. Do not add lime to the planting site, as it reduces the soils acidity, according to the website Floridata.com. To raise soil acidity, amend the garden soil with compost, peat humus or manure. Space multiple plumbago plants approximately 4 feet apart.
- Blue plumbago adapts well to potted growth. It works well on balconies, walls or inside large hanging baskets, where the thin, arching limbs can drape over the sides. Place standing containers by doorways, porches or on pool decks to add color. For adequate space for root growth, utilize containers two to three times larger than the plant's root ball. Select a pot that drains, so root rot is not a problem. Use a lightweight, well draining and organically rich potting mix inside the pot. Any type of container is suitable, but materials such as clay are porous and plants require more frequent watering.
- Once established, blue plumbago is relatively hardy in drought conditions. Water new plants weekly while the root system establishes itself into the new planting site. Irrigate container plantings when the top 2 inches of soil feels dry. If the foliage begins yellowing, the plant is suffering from a deficiency in manganese. Applying an application of manganese sulfate will treat the problem. Follow the label instructions concerning amounts. Prune blue plumbago all year to keep the plant in shape. Discontinue pruning only if a freeze or frost threatens. Fertilize twice during the growing season of spring through summer, according to the University of Florida IFAS Extension. Apply an all-purpose blend under the plumbago's canopy. Treat scale or mites with an approved insecticide and apply according to directions.
previous post
next post