What are the common pests of orchids and how to control them?

What are the diseases and insect pests of orchids

1. Anthrax

This is the most common disease of orchids, which will lead to obvious small black spots in plants at the initial stage of the disease, and then will continue to expand, knowing that all plant leaves form irregular diseases, and in serious cases, anthrax will appear in the center of the disease spots, thus affecting the normal growth of plants.

2. Scale insects

Almost all plants will be infected with this pest, especially in summer, the weather will be more serious, if coupled with poor indoor air circulation, plants will easily appear scale insects, and scale insects propagate very fast, serious cases can lead to the death of the whole plant.

3. Nematode disease

Nematodes are parasitic on the roots of orchids, causing root rot, poor growth of aboveground leaves, turning green and yellowing, and even causing plant wilting. Nematode damage caused a large number of wounds, but also caused the infection of other soil-borne bacteria, resulting in plant disease and accelerated plant death.

4. White silk disease

The disease is the most serious when watering is too wet or poor ventilation, especially the newly planted seedlings are the most vulnerable. The infected site will produce brown spots, which will expand rapidly in a high-temperature and humid environment, and eventually show black and brown spots. If flower friends encounter this situation in the process of breeding, not timely treatment will lead to the death of the whole plant.

2. Common insect pests and control methods of orchids

1. Odorous vegetables

Odorous vegetables have their own peculiar smell, and their odors can play a role in insecticidal and sterilization. The odor vegetables commonly used in the family are onions, garlic, leeks, ginger, onions, etc., take the right amount of odor vegetables. Mash it into juice, mix it with less water, and spray the orchid plant directly. It can treat aphids, red spiders, shell insects and gray mold.

2. Ointment application method

For orchid black spot disease and other local patients, such as reluctant to remove the whole leaf, you can use local ointment smear method, the specific method is to use Topjin powder water and paste paste in the patient, wipe off and re-daub every other week, can maximize the inhibition of patient development and expansion, orchid friends might as well give it a try.

3. Cigarette butts prevent insects.

Tobacco leaves contain nicotine, which can detect and kill pests. Only take more than 20 cigarette butts and a portion of quicklime, stir evenly with water, soak overnight, then filter, add 30 times of water, and directly spray orchid plants with it. Spraying the bottom of the basin can also kill ants and other pests.