Did you get the signals of diseases and insect pests sent out by rose?

In summer, the weather changes greatly, and there is a heavy rain and a big sun. In this kind of weather, the rose is easy to breed diseases and insect pests. However, because flower friends do not understand the "signal" problems of rose diseases and insect pests in the process of conservation, they often do not prevent them in advance. When it is discovered, they are often "terminally ill".

So, in summer to raise the rose, we need to pay attention to which diseases and insect pests "signals" sent to us by the rose? Flower friends, let's have a look!

1. If there are black spots on the leaves, should they be completely removed?

In this season, we should pay attention to the diseases caused by Rain Water and moisture. If flower friends see black spots on the leaves of the rose, at first it is a mild symptom, remove the diseased leaves and spray chemicals; if the black spots spread, spray chemicals to keep the leaves that have not fallen off.

Do it once a week and spray it again occasionally. Since then, if there is a yellow line in the diseased leaves, it means that the treatment is effective. These leaves will not fall off even if they are touched, so just leave them as they are.

Usually, flower friends raise rose, need to pay attention to timely replenishment of nutrients, even in summer, rose is still growing. Therefore, a special organic nutrient solution for rose can be used to irrigate the root 500 times with water, once a week to promote the growth of rose and enhance disease resistance.

2. The rose finally blossomed, and the petals were covered with yellowish-brown markings. What's the reason?

This is probably caused by thrips. Collect all the petals and seal them in a plastic bag. Thrips generally haunt from May to October, once they appear, they will absorb the juice of the rose, causing harm. The rose planted in the ground will also appear that the petals injured by Rain Water stick together and the buds cannot come out.

This is actually caused by thrips laying eggs in the depths of flowers or leaves. Endangered rose, petals will produce silver or yellowish brown markings, greatly affecting the beauty of the flowers. At this time, flower friends need to cut the note short as soon as possible, reduce the number of pests as much as possible, cut the residual flowers, paper should be sealed, and then spray with medicine.

3. The leaves of the rose seem to be rusty. Why?

If the leaves of the rose are found to be rusty, they may be attacked by spider mites. Leaf mites, also known as red spiders, appear in large numbers in places where there is no rain from summer to autumn. It will decrease after spraying water on the back of rose leaves for a period of time. In addition, when using medicament to drive away, 2-3 kinds should be used alternately, the effect is the best.

The picture is from Flower friend: big ear Duojun