How to cultivate Iris and its Culture methods and points for attention

Iris must be no stranger to many people, it is a more common variety of flowers in life. Iris is favored by people because of its high ornamental value, and its main ornamental point lies in its flowers, which are generally common in purple and blue. However, before breeding, we must be most concerned about its breeding method!

How to grow irises

1. The soil temperature is very important, with a minimum of 5-8 ℃ and a maximum of no more than 20 degrees Celsius. The level of soil temperature will affect the emergence of Iris. The optimum temperature is between 16 and 18 ℃.

2. Iris is planted in greenhouse, and the best temperature is 15 ℃. The temperature in the greenhouse remained at 18 ℃ for the first three weeks or so. 13 ℃ or at an acceptable low temperature will prolong the growth period and increase the weight of the iris, but the flowers are easy to wither.

3. In autumn, the greenhouse should have enough light, and the temperature in the greenhouse should be lower to prevent flowers from withering. Preferably at 10: 13 ℃. Pruning leaves should be considered in the growth stage of plants.

4. The average temperature of day and night is 2023 ℃, and the low temperature is within the acceptable range of Iris. High temperature and little sunlight is an important reason for flowers to wither.

Methods and points for attention in Iris Culture

1. Culture methods:

1. Soil: Iris will grow poorly in acidic soil, so culture iris should choose clayey loam rich in humus or alkaline soil mixed with calcareous. Before planting, the soil should be fully ploughed and applied with rotten compost and a small amount of bone powder and plant ash as base fertilizer. In addition, irises should not be planted too deep, and the roots should be pressed.

2. Watering: iris should be watered once after planting, and then it can be watered according to the dry and wet condition of the soil. Do not make the soil stagnant or too wet for a long time, so as to avoid rotting roots or diseases. In order to keep the plant beautiful, the leaves of the plant can be cleaned.

3. Fertilization: rarefied cake fertilizer or compound flower fertilizer should be applied once or twice before iris sprouting and growing to flowering in spring, and liquid fertilizer should be applied again after flower withering.

2. points for attention:

It takes eight to twelve weeks for irises to grow, and after the soil has been treated during this period, irises do not have to worry about weeding. After iris is planted, herbicides are usually used to remove weeds. But be careful not to hurt the iris.

What if the leaves of Iris turn yellow?

1. Excessive sunlight. Solution: shade when the sun is strong. In addition, outdoor Iris can be properly sprayed at noon to increase air humidity and cool down.

2. Overwatering. Solution: during the growth period, water is watered once every 7 days, the temperature decreases and the amount of water decreases slowly, and the basin soil dries slightly.

3. Excessive fertilizer. Solution: use some base fertilizer before cultivation and apply fertilizer once every autumn, which can be increased appropriately in the growth period.

Common Diseases and Control of Iris

1. Rot. The disease mainly harms the seed ball, causing the seed ball to be black or even blue-brown, and the surface is covered with spore clusters. Usually the aboveground part can not be seen or shown very late, seriously affecting the growth of underground rhizomes.

Prevention and control method: air humidity is less than 70%, maintain ventilation during storage.

2. Crown rot. The disease shows that the infected plants generally develop normally in the early stage, then wither and lodge, the bulbs become completely soft, and the plants are covered with white fabric.

Prevention and control methods: disinfect the soil and bulbs before planting to completely eliminate the source of infection. After discovering the diseased plant, remove the diseased plant in time and clean up the surrounding soil to avoid secondary infection.

3.Botrytis cinerea. The disease showed that the growth of the infected plant was blocked, and the sheath leaves were affected by wet rot and were covered with gray spore subnets from the ground. Although the leaf tip is not yellow, the plant is still lodging.

Control methods: bulbs should not be too dense when planting to ensure that there are no weeds in the soil during the growing period. Keep the soil moisture at about 80% and keep the plant dry. Try to water in the morning or in the morning, and bask in the sun in time after watering. When there are spots on the plant, spray fungicide in time.

Iris must pay attention to the proportion of soil and temperature control, and then need to strengthen the management of fertilizer and water, only in this way can its growth be ensured. If the iris has the phenomenon of yellowing leaves, first find out the cause, and then thoroughly solve the root cause.