What is the reason for the rose buds falling off?
The editor introduces to you the knowledge about why rose buds fall off, and the following [] editor will introduce accordingly.
Why do rose buds fall off? It's just because of this basic mistake!
Spring is a season full of expectations, especially when you see that the branches of roses are full of buds, as if the blooming season is about to come. Persisting in daily inspections, watering, and fertilizing, suddenly you find that the bud stems of the roses have turned yellow and the buds have fallen off. What should we do? It's too bad.
Why do rose buds fall off?
If we want to solve the problem, we first need to find the cause of the problem. Why do rose buds suddenly fall off in large numbers when they are growing well? We can consider the following four points.
1. Excessive application of nitrogen fertilizer
Roses have different needs for water and fertilizer at different growth stages. For example, during the germination period, when new branches and leaves are growing, a large amount of nitrogen fertilizer is needed. At this stage, we can use fertilizers with higher nitrogen content or general growth fertilizers, such as Huaduo No. 1, agricultural compound fertilizers, etc.
After the roses have formed buds, we should promptly switch to fertilizers with more phosphorus and potassium, such as commonly used Huaduo No. 1 or potassium dihydrogen phosphate fertilizer. If we use the same fertilizer for a long time, it will cause a deficiency in certain nutrients in the rose, leading to problems.
For example, the rose in the above picture has fallen off its buds because too much nitrogen fertilizer was used and not enough phosphorus and potassium fertilizers. Why do we make this judgment? We can actually find the problem through observing the details.
The leaves of this rose are dark green, large, and thick, which indicates sufficient nitrogen fertilizer. Moreover, in the picture, we can see that two buds below the flower bud have already started to germinate.
In normal situations, new buds will only germinate after the flower bud opens, or even after it has withered. But these two new buds are clearly eager to replace the old ones, which is a sign of excessive nitrogen. This leads to the rose switching back to vegetative growth prematurely, discarding the flower bud.
Excessive nitrogen fertilizer is not necessarily a problem with water-soluble fertilizers. Improper use of fermented organic fertilizers can also cause this problem. Therefore, before fertilizing, it's essential to understand the characteristics of the fertilizers better. For specific usage and fertilization principles of various fertilizers, you can refer to the book "How to Bloom Roses from Scratch," which provides detailed fertilization information and plans.
2. Suffered from drought
Besides incorrect fertilizer use, if the rose suffers from severe drought during the bud formation process, it will also show the phenomenon of falling buds.
Severe drought can damage the capillary roots of the rose, causing the rose to automatically abandon the flower bud to survive, resulting in falling buds. Especially in spring, when the weather is warm, the afternoon is still quite hot. If the potted rose has a large plant form and is not watered in time, it can easily cause drought. Therefore, during the breeding process, special attention should be paid to the dryness and wetness of the potting soil to avoid drought.
3. Severe lack of sunlight
If our rose was previously grown in a well-lit position, and after forming buds, it was moved to a darker environment without sufficient sunlight, the rose will often show the phenomenon of falling buds.
Whether it is growing branches, forming buds, or flowering, roses need to maintain sufficient sunlight. During the flowering period, sunlight can be reduced appropriately to extend the flowering period, but it must not be left in the shade, otherwise, it will cause the rose to fade and wither prematurely.
4. Infected with downy mildew
If the stem base of the rose is infected with downy mildew, the rose will also show the phenomenon of bud drop, but this process develops relatively slowly, and we can also clearly see the abnormality in the branches below the bud. For downy mildew, treatment is more important than prevention. If we can spray regularly during maintenance, this situation can be avoided.
The above is the full content about why rose buds fall off, and I hope it can help you. Also, I hope everyone comes to see more green plant and flower experience and common sense!