Perennial herbaceous plant with deciduous leaves, native to Asia and the American continent; these shrubs develop erect woody stems, 80-150 cm high, covered with a thin down, which bear large oval leaves, sometimes elongated or trilobed, green on the upper page, whitish and tomentose on the lower side, toothed.
Throughout the summer it produces numerous funnel-shaped flowers, 15-20 cm wide, white or pink, there are also hybrids with deep red flowers. To encourage more abundant flowering it is advisable to remove the withered flowers; in autumn the plant completely loses its leaves and sometimes the whole aerial part, which will develop vigorously the following spring. In nature these shrubs are large colonies, near marshes or slow and shallow watercourses.
Despite during the bad season the aerial portion of the plant perishes, the roots do not die and when the winter ends, and the conditions are again suitable for its growth, the aquatic hibiscus is reborn from the roots, reforming the stem and the leaves.
With regard to exposure, let us remember to place the hibiscus moscheutos in full sun, or in partial shade; generally it bears temperatures of some degrees below zero, but it is advisable to mulch the base of the plant in winter, to preserve it from too persistent frosts. Generally these plants develop on the banks of streams or swamps, even near brackish waters.
Hibiscus moscheutos prefers loose, rich and very moist, but not completely submerged soils. In general it prefers neutral or high ph soils, but it grows without problems in most lands; It is possible to cultivate marsh hibiscus also in a container or in the garden, but in this case it is necessary to provide daily watering, from March to October, especially in hot weather, as this plant hardly tolerates drought.
It is a species that needs great availability of water both for itself and for what concerns the climate, which must be humid.
The multiplication of water hibiscus generally occurs by seed, using, at the beginning of spring, the seeds taken from the woody capsules that contain them and placing them in warm water for about two days; it is sown in a shaded and sheltered place, keeping the growing substrate constantly moist; the new plants are planted at the end of the summer, or the following spring. It is also possible to propagate the Hibiscus moscheutos by dividing the clumps, maintaining a vigorous root for each portion, as long as the new plants are immediately placed at home.
Hibiscus - Hibiscus moscheutos: Pests and diseases
Speaking of diseases and parasites that attack Hibiscus moscheutos, aphids often nest in buds and on flowers, ruining them beyond repair. In this case aficidi can be used to eliminate insects from the hibiscus moscheutos. These products are found in any nursery and must be distributed most often in a watery solution, spraying the foliage of the plants abundantly and several times.