Iris cultivation methods and precautions

Article Catalog

soil requirements

greenhouse control

Drainage requirements

Fertilization points

clear weeds

Bulb storage

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The soil with good drainage should be used for cultivating iris. The minimum soil temperature should be controlled at 5~8℃, and the optimal temperature should be between 16~18℃. It should also be equipped with a good drainage system. Do not apply phosphate fertilizers and triphosphate fertilizers to it. Use diphosphate fertilizers. Herbicides need to be used to remove weeds during the growing period, but do not damage them.

soil requirements

Soil requirements

Irises do not have high environmental requirements. You can plant in spring or autumn. Irises do not have high soil requirements as long as they have good drainage and a certain amount of humidity. For some iris species with a short growth cycle, good soil is a must. If you have heavy soil, add some peat, vermiculite or coarse sand and mix it to improve the soil.

Greenhouse control

Soil temperature It is very important to control the minimum temperature at 5~8℃ and the maximum temperature at no more than 20℃. The level of soil temperature will affect the emergence of iris seedlings. The optimal temperature is between 16~18℃.

The optimal temperature for growing iris in the greenhouse is 15℃. The temperature in the greenhouse was maintained at 18°C for the first three weeks or so. 13℃ or within the acceptable low temperature of iris will prolong its growth period and increase the weight of iris, but the flowers will wither easily.

In autumn, the greenhouse should have sufficient light, and the temperature in the greenhouse should be lower to prevent the flowers from withering. The best temperature is 10~13℃. Consider pruning leaves during the growth stage of the plant.

The average temperature during the day and night is 20~23℃, and the low temperature is controlled within the acceptable range of iris. High temperature and lack of sunlight are important reasons for withering of flowers.

In some areas prone to natural disasters such as frost, the cultivation process is best done in a greenhouse. Growing temperatures are better at night. Greenhouses that are not temperature-controlled should be closed early to make nighttime temperatures more suitable for irises growth. Ventilate as early as possible during the day to prevent damage to iris when the temperature exceeds 18°C. Blocking the sun is one of the means of temperature control, but an appropriate amount of light must still be maintained.

Drainage requirements

Equipped Drainage systems can make fuller use of water in the soil. This can also solve the problem of salt accumulation caused by low water content.

Fertilization points

Before planting iris The method of fertilization will cause the iris roots to grow slowly. Fertilization is simply a matter of adapting to local conditions. Different fields require different fertilizers. Phosphate and triphosphate fertilizers cannot be used on iris. Bisphosphate fertilizers can be used.

Clear weeds

Iris growth It takes eight to twelve weeks. After the soil is treated during this period, there is no need to worry about weeding while the iris is growing. After irises are planted, herbicides are generally used to remove weeds. But be careful not to damage the iris.

Bull storage

Bulls The storage temperature must be 30°C, and cut flower bulbs must be planted immediately. If not planted immediately, it should be stored at a suitable temperature. The temperature must meet the growth requirements of the bulbs, and the temperature must be adjusted frequently to ensure the growth of the bulbs. Keeping the temperature at 2°C for no more than 2 to 3 weeks is the best option. Storage temperatures higher than 2°C will prolong the processing time and have a negative effect on flowering. Place the bulbs in the bottom of an empty container. The storage temperature is 2℃ to maintain good ventilation. Bulbs are not suitable for long-term storage. Storage for too long is detrimental to future growth of stems and leaves, and is also prone to Penicillium infection.

It is important to maintain adequate water supply during the planting period of iris to be cut flowers. The first few days of planting should be sufficiently moist. This will ensure rapid root growth in the early stages and the roots will not be easily damaged during planting. Watering with cold water is more appropriate when the soil temperature is too high. If the soil temperature is high, the bulbs will grow quickly and the quality of the cut flowers will be poor. When planting, it is better to choose a place with low soil temperature. When summer comes, covering the ground with insulating materials can prevent excessive solar radiation.

greenhouse control

Drainage requirements

Fertilization points

clear weeds

Bulb storage

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