Rose of sharon varieties is a plant that is native to Asia and is a part of the hibiscus family. This plant is known for its large, showy flowers that bloom in the summer and fall. There are many different varieties of rose of sharon, and they come in a variety of colors including white, pink, purple, and red.
Related plant:
Modern Shrub Rose
Related plant:
Purple Rose Bush
About soil condition, Rose of Sharon thrives in average to poor soil that is well-drained. The plant is not particular about soil pH and will do well in both slightly acidic and slightly alkaline soils. Soil that is too rich in nutrients will cause the plant to produce an abundance of foliage at the expense of flowers.
Like the other roses, the rose of Sharon requires full sun in order to thrive. Without at least six hours of direct sunlight per day, the plant will likely become leggy and produce fewer flowers. If you live in an area with hot summers, some afternoon shade may be appreciated to prevent the leaves from burning.
The temperature condition for the rose of sharon varieties is warm. The rose of sharon varieties need a temperature that is warm to hot in order to thrive. They will not do well in an environment that is too cold or too hot. They need to be in an environment that is humid and has good air circulation.
Ideal humidity condition for this plant is around 40-50% The Rose of Sharon is a type of hibiscus that is native to Asia. There are many different varieties of Rose of Sharon, and they can range in color from white to pink to purple. The Rose of Sharon is a hardy plant that can tolerate a wide range of conditions, but it prefers a humid environment. If the air is too dry, the plant will drop its leaves.
For the fertilizer, this type of plant does best with a general-purpose fertilizer that has a ratio such as 10-10-10. Apply the fertilizer before new growth begins in the spring. For the root, the Rose of Sharon is a very hardy plant and can tolerate a wide range of soil conditions. It is best to plant the Rose of Sharon in a sunny location.
Pruning is an important part of rose of sharon care. It helps to keep the plant healthy and promotes new growth.deadhead spent flowers to encourage continued blooming. You can also prune to shape the plant or to control its size.
Propagation is typically done with softwood or semi-ripe cuttings taken from the new growth of the season. Hardwood cuttings can also be taken, but they are more difficult to root. The cuttings should be 4-6 inches long and have several leaves. New growth is typically more vigorous and has a higher success rate for rooting. Rooting hormone can be used to encourage rooting, but is not necessary. The cuttings should be placed in moist potting mix and placed in a bright, but not direct, location. They should be kept moist, but not wet, and should not be allowed to dry out. After a few weeks, the roots should be well-established and the plants can be transplanted to their permanent location.
Usually, the plant growth rate at a moderate to fast rate. However, there are some that are quite slow-growing. When choosing a rose of sharon for your garden, be sure to select one that is appropriate for the space you have available and the amount of time you are willing to wait for it to reach its full potential.
Common problems for this kind of plant are powdery mildew, rust, and leaf spot. These can all be controlled with the proper fungicide application. Insects are not generally a problem for this plant, but if you see any aphids, whiteflies, or scale, you can control them with an insecticide.
Source:
Ask IFAS: Rose-of-Sharon - University of Florida
Rose of Sharon has high growth potential - Mississippi State
Althea (Rose of Sharon) | Texas Plant Disease Handbook