Modern shrub rose is a hybrid rose plant that was developed in the early 1900s. It is a cross between the old garden rose and the modern rose. The modern shrub rose is characterized by its large, showy blooms, and its ability to produce an abundance of flowers. It is a popular choice for gardens and landscaping because of its beauty and hardiness.
About soil condition, modern shrub roses grow best in fertile, well-drained soils with a pH of 6.5 to 7.5. They also prefer soils that are high in organic matter. If your soil is heavy or clay-like, you can improve its drainage by adding some organic matter such as compost or shredded leaves.
So, like the other roses, modern shrub roses require full sun to thrive. Six to eight hours of sunlight each day is ideal, although they will still grow and bloom with less sun. If you live in an area with hot summers, some afternoon shade is appreciated to prevent the flowers from getting scorched.
The temperature conditions that are ideal for modern shrub roses are between 60 and 70 degrees Fahrenheit. Roses thrive in these temperatures, and they are able to produce an abundant amount of blooms.
Ideal humidity condition for this plant is around 40-60%. If the humidity is too low, the leaves will start to curl and the plant will stop growing. If the humidity is too high, the leaves will start to yellow and the plant will start to rot.
For the fertilizer, this type of plant prefers low nitrogen and higher phosphorus levels. For the root, it is best to start with a soil that is well drained but still has moisture. You can also start with a soil mix that has perlite or vermiculite.
Pruning is an important part of keeping your modern shrub rose healthy and looking its best. You should prune your rose in early spring, before new growth begins. Once new growth begins, you can prune away any dead or diseased branches. You should also trim back any branches that are crossing or rubbing against each other.
Propagation is typically done by taking cuttings from the desired plant. Cuttings should be taken from new growth, as this will root more easily. The cutting should be about 4-6 inches long, and the bottom leaves should be removed. The cutting should be placed in a pot with well-draining soil, and kept moist. After a few weeks, the cutting should take root and can be transplanted to a larger pot or into the ground.
Usually, the plant growth rate is extremely fast, with new plants easily growing several feet in a single growing season. This is especially true of newer varieties that have been bred for superior growth rate. Gardeners should be prepared to provide support for these rapidly growing plants, as they can quickly become top-heavy and fall over without proper staking.
Common problems for this kind of plant is black spot, which is a fungal disease, and powdery mildew, which is another fungal disease. Both of these problems can be controlled with the use of fungicides. Insect problems are not as common, but can include aphids, Japanese beetles, and scale. These insects can be controlled with the use of insecticides.
Source:
Shrub Roses
TYPES OF MODERN ROSES - ucanr.edu
C Shrub Roses - Rosa spp. - University of Florida
