What disease did rose get this month? how to treat it?

This issue is a series of programs called "Flower cultivation 1000 questions", horticultural lecture hall. Welcome your questions, all the questions you left me, we will answer you as soon as possible.

Hello, everyone has been brewing for a long time, the horticultural lecture hall has officially met with you today. In the later period, we have pictures and videos to tell you about the knowledge of growing flowers. In the first issue of this issue, you are welcome to ask questions.

Q: why are the newly bought rose leaves yellow?

A: there are many kinds of yellow leaves, the common ones are as follows:

Natural yellow leaf

Because the environment temporarily does not adapt, leading to stress yellow leaves, this is a small problem, do not make a fuss.

Overwatering yellow leaves

Belongs to the typical injury yellow leaf, the principle is: the soil anoxia, causes the root system to receive the damage, causes the nutrient deficiency and the yellow leaf. Serious can lead to the death of the plant.

Pathological yellow leaf

Fungal diseases, such as leaf spots, black spots, etc., are highly contagious. If they are not treated in time, they will be finished.

Q: how to deal with the rose with natural yellow leaves?

Answer: clean the fallen leaves of the flowerpot, the branches and yellow leaves can also be cleaned, and then pay attention to slow seedling shade, safe can be sprayed with carbendazim solution once.

Q: what should be done if the yellow leaves are overwatered?

A: according to the degree of importance, the light is just the emergence of yellow leaves. It just started at this time, as long as we control the watering, there will be basically no problem. But if the whole tree is full of yellow leaves, it is estimated that the root system will rot completely, and it will be Yang Bailao to save it. There are also slight root problems, which can be conditioned with root-promoting nutrient solution, and the effect is good.

Question: how to use medicine for pathological yellow leaves, black spots and leaf spots?

A: this has to be discovered earlier, the sooner the better. Traditional medicine: carbendazim diluted 1000 times, spray. However, it can only play a certain preventive effect, and those who want to have a good effect can use azoxystrobin, diphenyl ether methyl ring, copper and other pesticides. Dilute the leaf spray 1000 times, spray at intervals of 5-7 days, and use it 2-3 times continuously.

There are generally so many yellow leaves of the rose, and then we should pay more attention to ventilation, otherwise the rose is easy to be "stuffy" yellow. Many people like to raise rose in autumn, so let me give you some advice.

(1) it takes some effort to select seedlings.

Do not buy indiscriminately, do not be cheap, better will not be too cheap, cheap is not good. Don't always ask for free delivery. Haomiao basically doesn't have free delivery now. Choose rose I recommend eaves, cooperation for a long time, the effect is still OK.

(2) soil selection should not be careless.

Do not carelessly choose what kind of soil, if you want to raise you, you can raise it for me. Cheap people are always the most expensive. Do not use the novice garden soil alone, you can add some good nutrient soil to mix it, and the root system will grow well after breathable. This kind of rose is easy to grow well, easy to blossom and burst!

All right, that's all I have to say in this question and answer. Please give me a like if you think it is practical. If you have any questions, please leave a message directly. Maybe your question can be adopted by me.