How to grow petunia

1. Breeding environment

1. Soil: Petunias can be grown in loose, well-drained, slightly acidic sandy soil. You can also add some perlite or vermiculite to increase the permeability of the soil.

2. Watering: It needs sufficient water. Ensure that there is enough water in the bottom pot. In winter, it is recommended to ensure sufficient water at noon when the sun is sufficient. Do not overwater.

3. Light: It needs light to grow, so it should be placed on a south-facing table with sufficient light. With sufficient water, ensure full sunlight, while avoiding direct sunlight.

4. Temperature: It has a certain ability to resist low temperatures and can grow at a low temperature of 5°C, but there must be sufficient sunlight.

5. Fertilization: Its growth requires sufficient fertilizer. Fertilization should be done regularly with a cycle of 10-12 days. Slow-release fertilizer can be used.

2. Breeding Methods

Sowing and seedling raising: It can be cultivated all year round. Fill a disposable paper cup (with a few small holes at the bottom) or a small flowerpot with seedling soil, water it thoroughly, and spray the seeds to moisten them. Do not cover the seeds with soil to affect germination. The temperature should be maintained at 22~24℃ to ensure that the seedlings grow in a well-ventilated and sunny environment.

3. Pest and disease control

Common diseases and pests of petunia are white mold, leaf spot, and virus disease. The prevention and control methods are:

1. White mold: In the early stage of the disease, the diseased leaves should be removed and sprayed with 600-800 times diluted 75% thiophanate-methyl.

2. Leaf spot disease: Be sure to remove diseased leaves and burn them, and prevent them from being damaged by strong winds, sunlight, and low temperatures. You can spray 1000 times diluted 50% mancozeb.

3. Viral disease: In the early stage, pesticides should be sprayed, such as 1000 times solution of 40% oxydemeton-methyl. During the planting process, attention should be paid to disinfection if the plants have come into contact with diseased plants.