Lack of lighting on the roses is like a child who is not full
The knowledge of green plants and flowers introduced here is about roses that lack lighting, just like a malnourished child, and the specific introduction is as follows:
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Excerpt from the "Three-Step Method of Rose Breeding" series of articles
Since I started writing articles to share my experience in growing flowers, I often receive various questions from flower friends about the process of growing flowers.
I remember that last year, there was a reader in the reader group who encountered such a problem:
Her rose branches are very long and thin, and many of them have blind buds.
I thought at first that it should be because it had been a long time since the last fertilization, and the lack of fertilizer caused the roses to be malnourished.
But according to the description of the flower friend, she applies liquid fertilizer to the roses every 10 days or so, so it doesn't seem to be related to the lack of fertilizer, but the whole plant looks malnourished.
Where is the problem?
After understanding, it turns out that in the place where this flower friend is located, it has been rainy for a month without sunshine, so it is the malnutrition caused by insufficient light, not the malnutrition due to lack of fertilizer.
Roses are typical sun-loving flowers, which has been explained in previous articles.
Sun-loving flowers must be given sufficient light to grow well.
For roses, sunlight is the basic nutrient source for rose growth.
Without sufficient light, the photosynthesis rate of roses cannot reach the standard, and it cannot effectively synthesize organic matter and exchange nutrients with the roots, and after a long time, roses will show signs of malnutrition.
Since light has such a great impact on roses, how should we control the light?
Here, I will only briefly mention the general principles.
In spring, autumn, and winter, full sunlight should be given, and if full sunlight is not available, then expose to sunlight for as long as possible.
The light control of roses in summer is relatively more complicated.
For heat-resistant varieties, full sunlight will not kill them, but may be suppressed due to high temperatures and enter a semi-dormant state.
For sun-intolerant varieties, they may perform even worse and show leaf wilt.
Therefore, in summer, it is appropriate to provide shade, blocking the midday sun, which is beneficial for the growth of roses.
Specific measures:
You can use sunshade nets to provide shade, but note that the sunshade net should not be directly covered on the roses, and there should be at least 80cm of space between the sunshade net and the roses to ensure sufficient ventilation.
If you don't have a sunshade net, you can use the combination of potted plants to provide shade. Place the roses next to other large potted plants to shade them.
If you don't mind the trouble, you can also provide a sunshade umbrella for the roses at noon in summer.
For those who grow flowers on the balcony, you only need to place the rose pot inward to block the midday sun.
As for the method of shading, everyone can use their available resources and use them reasonably.
What needs to be noted is not to shade all day long, just block the midday sun.
If you shade all day, it is easy to cause the roses to have excessive growth due to insufficient light.
Many flower friends who buy Jiangsu rose seedlings in summer and early autumn will find that the rose branches are very long and thin, and the internodes are also very long, which is caused by the lack of light in the shade house.
Lack of lighting on the roses is like a child who is not full
Excessive growth will weaken the seedlings, reduce disease resistance, and increase the probability of blind branches.
Many flower friends have poor lighting conditions for growing, but they love roses and don't know if they can plant them.
Actually, roses have relatively broad requirements for light, and some shade-tolerant varieties can even grow well with only about 2 hours of direct sunlight per day.
If the lighting in your home is not very good and you like roses, please continue to follow the Green Plant Enthusiast website's article tomorrow, and you will definitely find a suitable shade-tolerant rose variety for you to raise.
That is all for the content related to roses that lack lighting, just like a child who is not full, hoping it helps you!