How to grow iris? Cultivation methods, precautions and key points of temperature control

Iris is a relatively common plant in people's lives and has extremely high ornamental value, so how to grow iris is a question many people care about. What are the cultivation methods and precautions for iris? Let me walk you through them below.

I. How to grow iris / pay attention to temperature control

Regarding the question of how to grow iris, there are many aspects that need attention, such as the choice of soil and temperature control. As for the specific methods, they are described in detail below, and interested friends can take a look.

II. Cultivation methods and precautions for iris

1. Soil selection

Among the cultivation methods and precautions for iris, soil selection is the first step and a relatively important one. It is best to choose a relatively loose soil such as leaf mold, which gives better drainage and also helps iris absorb nutrients.

2. Fertilization requirements

During the cultivation of iris, fertilizer is an indispensable nutrient, but it should not be applied without restraint, and the amount still needs attention, because applying too much can easily burn the plant. So during the growing season, fertilizing once every 20-30 days or so is enough.

3. Watering requirements

Watering iris depends on the ambient temperature. In spring and autumn, when the weather is relatively mild, we can generally choose to water once a week. In summer, when the temperature is higher, the watering frequency should be increased slightly, because at higher temperatures water evaporates faster, so at this time we can choose to water once every 3-4 days.

4. Environmental requirements

When caring for iris, controlling the ambient temperature is also an aspect that needs attention. The most suitable ambient temperature for its growth is generally between 16-25°C. There is another point everyone should note, which is that during cultivation the environment must be kept ventilated, and it must never be grown in a closed environment.

5. Pest and disease control

During the cultivation of iris, pests and diseases can appear if care is improper, so attention must be paid during care. Of course, if this phenomenon occurs, it needs to be dealt with promptly. For specific methods, everyone can refer to the article on pest and disease control for iris. I will not go into too much detail here.

Cultivation methods and precautions for iris

Iris: Seeds of plants in the genus Iris generally have dormancy characteristics, and there are great differences in seed germination among plants in the genus Iris. Some species' seeds can germinate quickly, while seeds of some species under natural conditions often need about 1 year of dormancy before they can germinate, and germination is slow.

Cultivation methods and precautions for iris:

After iris is planted, soil temperature is the most important factor, with a minimum temperature of 5-8℃ and a maximum temperature of 20℃. The level of soil temperature directly affects the seedling emergence rate. Too low a soil temperature will reduce flowering ability, so the optimal soil temperature should be controlled between 16-18℃.

For iris production in a greenhouse, the optimal temperature is 15℃. To shorten the growing period, newly harvested bulbs can be used at planting, and the greenhouse temperature should be kept at 18℃ for the first 4-3 weeks. This temperature can be maintained until January 1, but it will cause the plants to be weak and small. A temperature of 13℃ or lower will prolong the growing period and at the same time increase plant weight, but the probability of flower withering increases. To promote flowering, such as with "Blue Magic", if the greenhouse high temperature has already been maintained, then lowering the temperature is a wise move.

Autumn care methods for iris

When iris plants are growing, especially in temperate regions, when light is insufficient, the greenhouse temperature must be lowered to prevent flowers from withering. It is generally controlled at 10-13℃. Taking "Blue Magic" as an example, the temperature is lowered to 10-8-5℃ to ensure plant growth as much as possible. If the leaves appear excessive at all stages, then consider trimming off some leaves.

The average day and night temperature for iris growth can be 20-23℃, with a minimum temperature of 5℃. In a greenhouse with high temperatures and weak light, lack of light is the main cause of flower withering.

In areas where frost damage occurs frequently, production can only be carried out in a greenhouse. Its suitable growth temperature should be arranged at night. Therefore, unheated greenhouses should be closed early to make the night temperature as suitable as possible. During the day, ventilation should be started early to avoid harm caused by the temperature rising above 18℃. Shading can also achieve the purpose of temperature control, but an appropriate light level still needs to be maintained.

Open-field growth temperature for iris

The optimal temperature for open-field growth of iris is 15-17℃. Continuous high temperatures during the day can be blocked with a shade net. It can not only reduce direct solar radiation, but also raise the temperature.

The minimum and maximum temperatures for open-field cultivation of iris are 5℃ and 25℃. For soil temperature, it should be kept the same as during greenhouse growth. Humidity requirements for iris

The relatively ideal relative humidity for iris cultivation is between 75-80%. It is important to note and avoid large fluctuations in humidity or gradual changes in humidity. On warm sunny days, shady days or humid weather, relative humidity tends to be higher. Corresponding measures must be taken, and humidity needs to be reduced through simultaneous heating and ventilation.

Ventilation environment for iris

For temperature control and reducing humidity, ventilation is a very important means. When ventilating, note that humidity must not drop too quickly, otherwise the leaves will wither, thereby causing a decline in the quality of iris cut flowers.

Shading environment for iris

Shading equipment can control the temperature, humidity and light in a greenhouse. In months with strong light, the temperatures in ventilated greenhouses and open fields are both too high (above 25℃). In this case, shading together with ventilation can suppress the decline in the quality of iris cut flowers.

Effect of carbon dioxide

What is completely different from lilies is that carbon dioxide has no effect at all on the flowering and growth of iris.

Irrigation requirements for iris

As mentioned earlier, the soil must be watered before iris is planted, and the soil should be kept moist during iris planting to promote rapid rooting.

After the bulbs are planted, the soil should also be kept moist. After that, throughout the entire growing period, the soil must remain fully moist for a long time. Suitable humidity is very important for iris growth, because insufficient humidity will result in insufficient plant growth height, and the flowers are prone to withering.

The irrigation amount cannot be calculated precisely, because it is related to many factors such as weather, the climate inside the greenhouse, soil type, crop growth cycle and growth stage. The simplest way to determine whether soil moisture is suitable is to take a small amount of soil and squeeze it in your hand. When you let go, if the soil clump does not crumble and still maintains its original shape, then the humidity is appropriate.

When air is not circulating, accompanied by shady days or humid or warm and humid weather, excessive water will lead to severe disease. At this time, bacterial and fungal diseases are especially likely to occur.

For the same reason, it is better to water in the morning. When watering in the morning, the plants do not dry out differently. During the harvest period, watering may be done only after the flowers are picked, otherwise gray mold spots will appear on the flowers.

When irrigating, it is best to use overhead sprinkling with an even water output.

Precautions for iris care

The growth process of iris takes only 8-12 weeks. In such a short growth time, if the soil has been treated by steaming, flooding, plowing, etc., then there is no need to consider the weed problem during plant growth. After the plants are planted, chemical herbicides are mainly used to remove weeds. However, when applying them, be careful not to cause harm to the plants.

If weeds begin to grow in the field after iris is planted, then herbicides can only be applied when the bulbs are buried deep enough. The newly emerging young shoots of the bulbs are safe from herbicide damage only when they are at least 2 cm below the soil surface.

Before iris plants spread their leaves, small weeds in the greenhouse or open field can be controlled by spraying suitable herbicides. If ordinary herbicides cannot effectively control some annual grass weeds, then a compound herbicide should be used instead. When applying, do it near nightfall, spray it on the plants, and then spray enough water. The next morning, rinse thoroughly from the top of the plants. Because herbicides have residual effects, the following points must be noted. The herbicide applied to each plot each year must be limited, and it is best not to exceed 2 times; use herbicides only when absolutely necessary; do not plant varieties that are sensitive to herbicides.

[Iris] How to grow iris, complete guide to iris flower meanings, iris picture appreciation

Most plants in the genus Iris have relatively high ornamental value and strong stress resistance, with broad adaptability, especially their role in garden construction and huge application prospects. How much do you know about it? Today, let me briefly introduce iris cultivation methods and take everyone to appreciate iris pictures.


.....

      Before appreciating these iris pictures, let us first understand its cultivation. Iris blooms in spring, with a flowering period of about three months, from April to June. Division and sowing are mostly used. Division can be carried out after flowering in spring or in autumn, and is generally replanted once after 2-4 years of cultivation. When dividing the rhizomes, note that each piece should have 2-3 adventitious buds. Seeds should be sown immediately after maturity, and seedlings need 2-3 years to bloom. A planting depth of 7-8cm is appropriate, and forcing cultivation can also be carried out.
.....

.....

      Iris pictures. After planting, soil temperature is the most important factor, with a minimum temperature of 5-8℃ and a maximum temperature of 20℃. The level of soil temperature directly affects the seedling emergence rate. Too low a soil temperature will reduce flowering ability. When plants grow in autumn, especially in temperate regions, when light is insufficient, the greenhouse temperature must be lowered to prevent flowers from withering. It is generally controlled at 10-13℃ to ensure plant growth as much as possible.
.....

.....
       In areas where frost damage occurs frequently, production can only be carried out in a greenhouse. Its suitable growth temperature should be arranged at night. Therefore, unheated greenhouses should be closed early to make the night temperature as suitable as possible. During the day, ventilation should be started early. Shading can also achieve the purpose of temperature control, but an appropriate light level still needs to be maintained.
.....

.....

      Iris pictures. Generally speaking, applying base fertilizer before planting is not advisable, as this will increase the salt concentration in the soil and delay the growth of the iris root system. Before planting, sample and test the soil to ensure the soil contains the correct nutrients. Sampling must be done after soil treatment and leaching. In this way, the missing nutrients can be obtained by directly supplementing fertilizer to the soil later. Iris is sensitive to fluorine, so fluorine-containing fertilizers and triphosphate fertilizers are prohibited.
.....

.....

      The growth process of iris takes only 8-12 weeks. In such a short growth time, if the soil has been treated by steaming, flooding, plowing, etc., then there is no need to consider the weed problem during plant growth. After the plants are planted, chemical herbicides are mainly used to remove weeds. However, when using them, be careful not to cause harm to the plants.
.....

.....

      After appreciating the iris pictures, do you feel that iris is so beautiful that you want to know its flower meaning? In China, iris is often used to symbolize love and friendship, a bright future, boundless prospects, and keen perception. In love, the flower meaning of iris is long-lasting longing. Europeans believe it symbolizes bright freedom. In ancient Egypt, iris was a symbol of power and eloquence. In addition, iris is also the flower of life for people born in the Year of the Sheep, representing making life better.
.....

      Iris has rich colors and unique flower shapes, and is a good material for flower beds and courtyard landscaping. It can also be used as ground cover plants, and some species are excellent fresh cut flower materials. Today, my introduction to iris cultivation methods and flower meanings ends here. Thank you everyone for accompanying me in appreciating iris pictures.