Attention Points for Rose Maintenance During the Mei-yu Season
This article provides a brief introduction to rose maintenance tips during the Mei-yu season. Let's find out what our editor has to say next.
With the arrival of the Mei-yu season, Zhejiang has been experiencing consecutive days of rain. What should we pay attention to when maintaining roses during the humid and rainy Mei-yu season?
Attention Points for Rose Maintenance During the Mei-yu Season
During the Mei-yu period, the weather is sultry and humid with plenty of rain, making it easy for roses to suffer from yellow leaves, black rot, bare stems, and poor growth. Special attention should be paid to the following points.
1. -- Ensure Proper Drainage to Avoid Waterlogging --
During the Mei-yu season, there is a lot of rain, and roses, whether potted or planted in the ground, are prone to waterlogging and root rot. For roses planted in the ground, it is important to dig drainage ditches. For potted roses, check the drainage holes of the flowerpots to prevent blockage. Also, avoid using saucers for outdoor roses as they easily accumulate water, leading to root rot and萎.
As long as the soil does not accumulate water, roses will not wither regardless of how poorly they grow.
2. -- Prevent Drought During Overcast or Light Rain Days --
During consecutive rainy periods, it is important to排水 water, but during overcast or light rain days, it is also important to prevent drought. Do not assume that rain or overcast conditions reduce evaporation, and thus, watering is unnecessary. For vigorous potted roses, watering is essential to prevent drought.
Therefore, during consecutive overcast or light rainy days, check the moisture level of the potting soil. The best method is to lift the flowerpot and feel its weight. If the pot is light, it indicates a need for watering.
3. -- Supplement Fertilizer After Continuous Heavy Rain --
During the Mei-yu season, with abundant rain and moderate temperatures, roses are still growing. However, the constant washing of the potting soil by rain can lead to significant nutrient loss, making fertilizer supplementation crucial.
If sufficient slow-release or fermented organic fertilizer has been applied previously, you can take advantage of the rainy season to sprinkle some ternary compound fertilizer or apply water-soluble fertilizer after the rain to replace rainwater.
If no long-acting fertilizer has been applied previously, it is recommended to sprinkle some slow-release or controlled-release fertilizer to continuously supplement soil nutrients, followed by a weekly application of ternary compound fertilizer.
4. -- Pay Attention to Preventing Black Spot Disease --
During the humid and sultry Mei-yu season, roses are prone to yellow leaves. Sometimes, yellow leaves are caused by high humidity and poor ventilation, and these leaves are relatively clean, similar to metabolic yellowing leaves. It is recommended to remove these yellow leaves promptly.
However, the Mei-yu season is also a peak time for black spot and grey mold diseases. Therefore, remove faded flowers promptly and do not leave them on the branches as they can mold after getting wet. With frequent rain, black spot disease is common, so it is important to spray pesticides for prevention. As long as the rose leaves are dry after the rain stops, you can spray the pesticides. If it does not rain within one or two hours after spraying, it will be effective.
When spraying, also add insecticides to kill thrips. Do not skip the spraying during the Mei-yu season. If black spot disease breaks out, the leaves will fall, making it difficult for roses to survive the summer.
The above[] provides detailed information on rose maintenance tips during the Mei-yu season and how to keep roses healthy and free from yellow leaves during the Mei-yu period. We hope it can be of help to you!