Why does the rose wither suddenly after blooming?
The editor introduces the reasons for the sudden withering of roses after blooming in the aspect of green plants and flowers. Keep reading!
In the past two days, the temperature has gradually risen, and roses have been growing at a visible speed. At this time, it is essential to apply a balanced growth fertilizer with nitrogen, phosphorus, and potassium to the leaves in a timely manner to promote the growth of branches. In the southern regions, roses are currently in full bloom. Students who are crazy about the flower wall group, the flowers of Abraham were in full bloom the day before yesterday, with super large flowers and vivid colors, very beautiful. However, a problem arises: within just two days, the flowers have turned into the following state.
The above picture shows that the petals have become焦枯 (charred and withered). What is the reason for this? Today, let's talk about the causes of this phenomenon and preventive measures to prepare for the upcoming blooming period.
I. Reasons for the Withering of Flowers
The normal manifestation of a failing rose is that the petals fall off, which is the case for most varieties, including Abraham. Abraham's single flower duration should normally last about a week. Therefore, withering after only two days is definitely an abnormal failure. We need to look for reasons from the following three aspects.
1. -- Disease Causing Flower Withering --
In spring, during the blooming period, the most common cause of premature aging or unopened flower buds in roses is the infection of gray mold. Usually, during consecutive rainy days, rose buds are prone to gray mold infection, especially varieties with more compact flowers, such as Freedom Spirit and Abraham, which are most easily infected when half open, leading to withered flowers.
However, the occurrence of gray mold should be in relatively humid weather. If it is always sunny and fungicides are sprayed, the cause of gray mold can be ruled out.
2. -- Drought Causing Premature Aging of Flowers --
In addition to infection with gray mold during rainy periods, drought is also an important cause of premature aging of flowers.
Especially in the southern regions, with higher temperatures and strong sunlight, for both potted and ground-planted climbing roses, if there is a lack of water and watering is not timely, the first problem that arises is with the flowers. For roses, when there is a lack of water, survival is the most important, and flowers are the least useful, so they are abandoned first.
3. -- Improper Fertilization Causing Fertilizer Burn --
Improper fertilization can also be one of the important causes of petal withering, for example, if foliar fertilizer is sprayed in the middle of the day and gets on the petals, it can easily cause the petals to be burned, leading to withered flowers. For specific fertilization methods, you can refer to the introduction in the book "How to Grow Explosive Roses from Scratch."
II. Methods to Prevent Premature Aging of Flowers
To avoid early aging of roses, or even to extend the blooming period, we need to avoid the above three mistakes and take the following preventive measures.
1. -- Regular Disease Prevention --
To prevent gray mold from damaging rose buds, it is necessary to start regular fungicide spraying when rose buds show color. It is especially important to increase the frequency of fungicide spraying during rainy periods and promptly cut off infected flowers.
2. -- Ensuring Adequate Water --
Roses require a lot of water during the rapid growth period and blooming period. It is essential to ensure adequate water supply (G-Y), especially for potted roses and large climbing roses planted in flower beds or planting boxes, which are prone to drought during the blooming period.
During the blooming period, water the plants when the soil surface becomes dry. The amount of water should also be increased, trying to water until water flows out of the bottom of the pot or planting box. For flower beds, refer to the amount of water used for large flower pots, or observe the condition of the rose seedlings. If the leaves droop and the flowers become soft, water them thoroughly.
3. -- Appropriate Topdressing --
If you want roses to have a long blooming period and continue to bloom, it is still necessary to continue topdressing when some roses are in bloom. However, it should be noted that concentrated fertilizers should not be used, and fertilizers should not be sprayed on the flowers, especially not in the middle of the day when the sun is strong, as these actions can easily cause fertilizer burn.
It is recommended to apply fertilizer once a week, either in the evening or early morning, to the roots. Adequate fertilization during the blooming period can also help roses recover quickly and maintain healthy growth.
The above is the detailed content of "Why does the rose wither suddenly after blooming?" and I hope it can be helpful to you!