What is the reason why rose leaves turn yellow and fall off in summer?

Rose , known as the "Queen of Flowers", is loved by people for its colorful flowers and charming fragrance. However, after the summer, many flower lovers will find that the rose leaves turn yellow and fall off, which makes many flower lovers worried. So what is the reason why the rose leaves turn yellow and fall off in summer? Let’s take a look below.

1. Improper watering

After summer, water evaporation accelerates. If the rose plants lack water or are not watered enough, the leaves will dry up, turn yellow and fall off. However, if you water too much, the roots will not be able to breathe normally, causing waterlogging in the soil, which will also cause root rot, and in turn affect the normal growth of the leaves.

How to deal with it: Water appropriately according to weather and soil conditions. In general, keep the soil moist but not too wet. During the high temperatures in summer, the frequency of watering can be increased appropriately, but watering should be avoided during the high temperatures at noon. Also, make sure the pots have good drainage to avoid standing water.

2. High temperature exposure

The temperature rises in summer and the sunlight is strong. If roses are exposed to high temperatures and scorching sun for a long time, the leaves are easily burned, resulting in yellow leaves and falling leaves. Especially some newly grown young leaves have poorer tolerance to high temperature and strong light.

Countermeasures: In summer, provide appropriate shade measures for roses. You can use a shade net or move the rose to a place with scattered light to avoid direct sunlight at noon. At the same time, keeping the surrounding environment well ventilated can help lower the temperature and reduce leaf damage.

3. Soil Problems

If the soil is not replaced for a long time or the soil is compacted and barren, it will affect the growth of the root system and the absorption of nutrients, causing problems with the leaves.

How to deal with it: Regularly replace the loose, fertile, well-drained soil. If the soil has become compacted, you can loosen it appropriately to increase the soil permeability.

4. Improper fertilization

Roses grow vigorously in summer and require an appropriate supply of nutrients . However, if too much fertilizer is applied or the concentration is too high, it will cause fertilizer damage, burn the roots, and cause the leaves to turn yellow; insufficient fertilizer will cause the plant to lack nutrition and the leaves to grow poorly.

Countermeasures: Apply fertilizer reasonably and follow the principle of "apply small amounts of fertilizer frequently". In summer, increase the proportion of phosphorus and potassium fertilizers and reduce the use of nitrogen fertilizers to enhance the resistance of plants. If fertilizer damage occurs, you need to reduce its impact and flush the soil with plenty of clean water in time.

5. Pests and diseases

Summer is a season with a high incidence of diseases and pests. Roses are easily attacked by diseases and pests such as powdery mildew, black spot disease, and red spider mites. These pests and diseases can damage leaf tissue, causing the leaves to turn yellow, dry up, or even fall off.

How to deal with it: Check the branches and leaves of roses regularly, and take timely measures to prevent and control any diseases or pests found. For diseases, you can use corresponding fungicides for spraying; for insect pests, you can adopt physical pest control or use pesticides . At the same time, pay attention to keeping the plants clean and ventilated to reduce the environment for the breeding of pests and diseases.

In short, when rose leaves turn yellow and fall off after summer, we need to carefully analyze and observe the reasons and take appropriate countermeasures. Only by giving roses careful management and maintenance can they continue to bloom beautiful flowers in summer and add color to our lives.