Rose of Sharon or Hibiscus
syrfiacus is the chief value of this shrub, also known as “shrub althaea”, lies
in its late summer bloom, usually coming in August. There’re number of
varieties, in shades of pink, purple, blue, lavender, red and white. Flowers
are usually three to five inches in diameter; extra-large ones can be produced
by cutting stems back to two buds after blooming. They’re tall, bushy plants
growing as high as 15 feet and can be grown as trees by eliminating all but one
stem and removing lower branches. They make good specimen shrubs, given enough
space, and also can be used as informal hedges, though close shearing is
detrimental both to bloom and to the shape of the plant.
Plant should be set in while
still young and protected with mulch until well established. Even so, until
they are mature, they are susceptible to winterkill. They will grow in sun or
part shade, and they like moist, humusy soil with good drainage. Pruning need
only be done if you want a smaller, compact plant, or to produce larger
flowers, as above. Cut back stems to laterals to control size and produce
vigorous growth and remove dead or damaged wood. Prune in winter in mild
climates, early spring in cold ones. Source: CP
