Cape Plumbago hedge - Plumbago capensis
Plumbago is a fast growing shrub that can be grown as a hedge from 1m up to 3m tall. The foliage of Plumbago becomes compact after pruning and this makes it great for creating medium to tall hedges. It has been used as a hedge plant for many years in temperate and warm temperate gardens. Plumbago is commonly used in cottage and mixed gardens in rural and suburban regions.
There are a number of Plumbago varieties available from plant nurseries and garden centres. There are white, blue and dark blue flowering varieties. The flowering occurs most of the year in warmer climates. The Flowering can be quite attractive with the plant being covered with masses of flowers. One very popular variety is "Royal Cape" (pbr) which has darker blue flowers.
As a hedge Plumbago is one of the fastest growing hedges, it has the drawback of requiring lots of pruning to keep it neat, some gardeners prefer to let the foliage grow longer, and prune only once or twice a year.
Plumbago is quite a lush looking hedge when growing well. It is however very tough and water-wise once established. Best climates for growing Plumbago are temperate, warm temperate and mediterranean regions. Avoid
areas with heavy frosts as the plant will drop leaf. Plumbago will grow in most soils, but heavy clay soils will slow growth somewhat. Good drainage is important. The best position in the garden is full sun, avoid shaded spots as shade will reduce foliage coverage.
To care for your Plumbago hedge p lant the shrubs in a well drained soil and use organic planting mix. Use slow release fertiliser. Water the plants well for the first few months. Plumbago is drought tolerant, so once the roots have developed, it usually grows well on just natural rainfall. Plants will take a little while to settle in and then bang…off they go… and growth multiplies as the roots develop. Pruning can be done anytime in warm regions and in areas with cooler winters it is best done in spring or autumn.
Pests are not usually a problem for Plumbago. Fertilise once or twice a year if you want Plumbago to grow quickly. Fertilising can speed up growth substantially with this plant. Plumbago makes a good screen plant, but also has a tendency to grow fairly wide and bushy. Plumbago plants live many decades and seem to live longer when pruned regularly.
Link. Grevillea flowering hedge and screen plants for your garden