In what season do hibiscus flowers bloom? What are the key points of pest control?

Hibiscus flower, also known as kapok, bauhinia, sunset flower and trumpet flower, is a common garden ornamental flower, which is planted all over our country, which can be used as a fence or planted separately. The flowers, seeds, skins and leaves of hibiscus flower can also be used as medicine, which can prevent and cure viral diseases and lower cholesterol. Let's take a look at the season in which hibiscus flowers bloom. What are the key points of pest control?

In what season do hibiscus flowers bloom?

The flowering period of hibiscus flower is very long, and its flowering actually varies from region to region, generally earlier in the south and later in the north. In Jiangsu and Zhejiang, it blossoms in June, blossoms from August to September, and decreases after October. Hibiscus in South China usually begins to blossom in May.

Second, what are the key points for the prevention and control of hibiscus diseases and insect pests?

(1) Brown spot of hibiscus

Symptoms: mainly harmful to leaves, disease spot polygonal, dark brown, size 3-10mm. When the humidity is high, there are dark brown velvet on the back of the leaves, that is, pathogen conidiophores and conidia. The disease spot is rare, and the back of the leaf is a diffused plaque, sometimes fused.

Prevention and control methods:

1. Careful maintenance, reasonable fertilization and appropriate application of organic fertilizer.

2. At the end of autumn, the diseased fallen leaves and diseased leaves on the branches were thoroughly removed and buried or burned.

3. At the initial stage of the disease, 50% carbendazim 800 times solution and 50% carbendazim 500 times solution were sprayed about once every 10 days for 2-3 times.

(2) harm of leaf spot and rust

Control method: spray with 65% Dysen zinc wettable powder 600 times liquid.

Pests include whitefly and beetle, mainly aphids, as well as inchworm and leaf roll moth.

Prevention and control method: it can be sprayed with 1000 times of omethoate EC. The safe deworming method for the environment is to use diluted detergent.

(3) White star beetle

Also known as "refined shell Lang", it harms hibiscus, rose, golden needles, etc., and bites young buds, leaves, flowers and buds with adults.

Prevention and control methods:

The main results are as follows: 1. capture adults manually.

2. The larvae are concentrated in the mature dung pile near the flower bed. But before June, when the adults have not yet emerged, turn the soil to pick up the larvae and pupae.

1. Spray 1000 times of omethoate EC to prevent and cure when the adults are full of harm.

(4) aphids

Aphids are the victims of hibiscus, and they are also the most common insect pests in hibiscus. When the disease occurs, the leaves and branches of hibiscus will be seriously affected, resulting in hibiscus can not blossom as scheduled, but also may be associated with other diseases, so it is very serious to solve aphids.

For the prevention and control of aphids, we need to take good care of the branches and leaves regularly. If we find that the color of the leaves or branches begins to turn yellow, we should pay special attention to it, because it is likely to be infested by aphids. The best way to deal with aphids is to use pesticides directly, which can be killed with 50% Huasheng or carbendazim solution, and then the control effect can be achieved.