Detailed Guide to Growing and Caring for Roses

Roses come in rich and varied colors and forms and are called the “Queen of Flowers,” loved by many people. However, when growing roses, you need to pay attention to many care issues such as root rot. Today, the editor will introduce the methods for growing roses and the points to note:

I. Methods for growing roses

1. Soil: Roses are not strict about soil, but slightly acidic soil rich in humus is best. Generally, choose fertile, loose, well-draining soil. The pot should have holes at the bottom, and some crushed stone should be placed as a base to maximize drainage.

2. Light: Roses like a sunny environment with good air circulation. Never place roses in a dark and damp place to grow. To avoid direct strong light, they can be temporarily placed in a shaded spot; during the flowering period, especially pay attention to shading, otherwise the flowers are prone to drying up.

3. Temperature: Roses like to grow in a warm environment, but they fear intense heat, so in summer, proper shading is needed. During extreme heat, they can be moved indoors. The most suitable temperature is 22-25°C.

4. Watering: Roses like a warm and humid environment. An air humidity of 75-80% is most suitable, and they can also tolerate mild drought. Basically follow the principle of not watering until dry, and when watering, water thoroughly. The watering time and amount should be carried out according to the specific condition of the soil in the pot.

5. Fertilizing: After May, roses enter their peak growing season. Every 10 days, topdressing should be applied once. There is no need to specially purchase fertilizer; decomposed and fermented fish juice, vegetable leaf juice, etc. can be used. The ratio of fertilizer to water is about 3:7, and fertilizing should continue until November.

6. Pruning: Roses have relatively long vines. If allowed to grow freely, they not only lose their shape but also affect growth and flowering. Therefore, according to need, they should be trained to grow well on a pre-arranged support frame to form a unique ornamental shape.

7. Pest and disease prevention: For routine pest and disease control of roses, 15% quicklime diluted with water can be sprayed, or sterilization solutions, etc. From July to August, inspections and control should be carried out weekly in a timely manner. Pesticides should be sprayed 2-3 times per week for prevention. Diseased branches and leaves should be cut off promptly when found.

II. Points to note when growing roses

1. Cold protection. Roses have strong cold resistance and can tolerate low temperatures of -10°C. Generally speaking, in the south, they can be placed directly under the eaves facing south to overwinter. In the north, potted roses should be moved indoors to a ventilated place when the temperature drops to within 10°C. Note that after the flowers fade in October, do not prune; apply one application of decomposed phosphorus fertilizer to promote sturdy and full branches and enhance cold resistance. In addition, when winter temperatures are very low, water appropriately when it is slightly warmer to avoid the plant dying from dry freezing.

2. Pruning. When the new branches of roses grow to 15-20 cm, about 3 cm should be cut off from the top to promote branching. When the side branches grow to a certain extent, pinching can also be carried out. By repeating this continuously, the rose plant becomes fuller and produces more flowers.

3. Potting. Potted roses at home all involve the issue of repotting and potting. Repotting is generally carried out in early spring before budding. Replace part of the soil with new soil, water thoroughly, place in a cool place, and after one week move to a sunny place for care.

4. Pest and disease control. When the environment is poorly ventilated and light is insufficient, roses are very prone to pest and disease problems, such as aphids, powdery mildew, black spot, etc. When pests or diseases appear, spray pesticides promptly to avoid affecting flowering.

III. Causes of root rot in roses

1. Flower pot

When growing roses, the size of the flower pot needs to match the size of the rose. If the pot is too small, the roots can easily grow until they fill the pot and cannot continue growing. Once this happens, the roots cannot develop well, and many root problems appear, such as poor respiration, and in severe cases it can lead to root rot.

2. Watering

Improper watering is the main cause of root rot in most plants, and roses are no exception. In fact, roses are not plants that fear water; they are quite tolerant of waterlogging. During the growing period, their water demand is high, so they need more watering. However, potted roses should preferably be watered in a controlled and reasonable way, because if there is too much water and it accumulates, the flower pot will hinder the discharge of excess water and cause root rot.

3. Temperature difference

Temperature difference is also a factor that affects the growth of rose roots. If the temperature difference is too large, for example when watering, if the water temperature differs from the soil temperature, it will stimulate the root system.

IV. What to do if roses develop root rot?

1. A suitable pot

The growth of roses requires a suitable flower pot. When potting, the pot needs to be somewhat larger than the rose plant to give the rose roots more room to grow. It also needs to be repotted in a timely manner as the rose grows.

2. Watering and temperature

Watering needs to be kept at a moderate level, ideally keeping the soil moist but not waterlogged.

3. Treating root rot

If root rot is found in roses, you can cut off the rotten roots, soak them in carbendazim, then place them in a ventilated place. In about one week, new roots can grow. Then replant them.