Are iris resistant to cold? What are the diseases of iris?

Article Catalog

1. Is it cold-resistant?

2. What are the diseases?

Irises are very adaptable. They are native to places with relatively high altitudes and can withstand the cold. There are many varieties of iris, and not all varieties are cold-resistant. For example, German iris is less cold-resistant. Most varieties are cold-tolerant and can grow in cold northern areas. They are suitable for planting in northern areas. They can generally survive the winter safely and do not require additional measures to keep warm.

1. Is it cold-tolerant?

Iris has a strong adaptability. It is native to places with relatively high altitudes. It can withstand cold by nature and can survive in some places. Survive in harsh environments. There are many varieties of iris, and not all varieties are cold-resistant. For example, German iris is less cold-resistant. Most varieties are cold-tolerant and can grow in cold northern areas. They are suitable for planting in northern areas and can generally survive the winter safely. , some varieties can also grow in Russian regions. If you like this kind of flower, you can buy it and cultivate it at home.

2. What are the diseases

1. Black rot: Improper maintenance of iris flowers may cause disease. Fungal infection can cause black rot, which damages the leaves, causing lesions on the leaves, and eventually causes the leaves to dry up and fall off. In the early stage, attention should be paid to the treatment of the disease, and 402 antibacterial emulsifiable concentrate can be used to spray treatment.

2. Bulb rot: This disease is mainly harmful The bulb part causes the plant to become low. There are many reasons for this disease, including the invasion of pathogens or excessive drying of the soil. The air humidity should be maintained well, less than 70%, and attention should be paid to air circulation when storing bulbs.

3. Root rot: Problems may occur during maintenance. This causes iris flowers to be infected with root rot. This disease mostly occurs between March and May every year. It will harm the roots and gradually cause root rot. After the disease occurs, it should be dealt with in time. You can use 0.3% trophic acid to water the roots.

- END -