Lavender, with its elegant color, beautiful inflorescence and light fragrance, is one of the favorite home breeding plants of flower friends. In addition, lavender can not only watch, but also purify the air, treat diseases, and play the role of medical care. With so many functions of lavender, how is its cultivation management? Let's go and have a look!
Cultivation and management of lavender cultivation methods of lavender: lavender is a small perennial shrub, which can be used for about 10 years. It has extensive varieties and is easy to cultivate. It likes sunshine, heat resistance, drought resistance, extreme cold resistance, barren resistance and saline alkali resistance. The cultivation place needs sufficient sunshine and good ventilation. The time from sowing to flowering (or harvesting) is 18-20 weeks. Lavender should be cultivated in large containers. However, in order to prevent excessive humidity, potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted potted. Lavender can't stand the heat and humidity. If it suffers waterlogging for a long time, it will die. When planting outdoors, do not let the rain fall on the plants directly. After May, you need to move the place where the sun can't be directly exposed, increase the degree of ventilation to reduce the ambient temperature and keep cool, so that you can safely spend the hot summer. Pay attention to sunshine, moisture, temperature and patience.
1. Soil
It is suitable for slightly alkaline or neutral sandy soil. Special attention should be paid to the selection of medium with good drainage. It can be used after mixing 1 / 3 pearl stone, 1 / 3 vermiculite and 1 / 3 peat moss. If it is open cultivation, we should pay attention to the drainage of the soil. We can raise the soil into a border before planting.
2. Watering
Lavender doesn't like water retention in its roots. After the first watering, the water should be supplied when the soil is dry. The surface culture medium is dry, and the inside is moist. The leaves are slightly wilted. Water in the morning, away from the sun, do not splash water on the leaves and flowers, otherwise perishable and breeding diseases and pests. In the continuous humid environment, the roots will not have enough air to breathe and grow poorly, even the whole plant will die suddenly. This is often the reason for the failure of lavender cultivation. After watering once, wait for the soil to dry and the leaves to wilt slightly before watering.
Cultivation and management of lavender
3. Illumination
Lavender is a full day plant, which needs sufficient sunlight and suitable humidity environment. It is better to give full sunlight environment, and it can also grow in half sunlight. From May to October every year, lavender blooms, and flowers are rare. At least 50% of the sun should be covered in summer, and ventilation should be increased to reduce the ambient temperature.
4. Temperature
Lavender is semi heat resistant, good cool, like warm in winter and cool in summer, suitable temperature for growth: 15 ~ 25 ℃, can grow at 5 ~ 30 ℃. Limiting temperature: above 35 ℃ and above 38-40 ℃ for a long time. In northern China, dormancy began when the temperature was below 0 ℃ for a long time in winter, and the seedlings could endure the low temperature of - 20 ～ - 25 ℃.
5. Fertilization
When fertilizing, the bone meal can be put into the basin soil as the base fertilizer (once every three months), and Huabao No.2 (20-20-20) can be applied to the seedlings, and the fertilizer with higher phosphate fertilizer such as Huabao No.3 (20-30-20) can be applied after the seedlings become mature. Apply light fertilizer. Lavender should not be fertilized too much, otherwise the fragrance will become pale.
Cultivation and management of lavender
6. Pruning
Lavender flowers are rich in essential oil, and they are mainly flowers or inflorescences when used. For the convenience of harvest, some small inflorescences at the early stage of cultivation can be leveled with scissors. The height of newly grown inflorescences is consistent, which is conducive to one-time harvest. Some varieties are as high as 90cm. This method is also used to make the plants low, promote more branches and flowers, and increase the yield. After flowering, the plants must be pruned. If the plants can be pruned to 2 / 3 of the original, the plant type will be more solid and conducive to growth. Pruning should be done in cold seasons, such as spring and autumn, usually in spring. Pruning in autumn will affect cold tolerance. When pruning, pay attention not to cut the lignified part, in order to avoid plant weakness and death.
7. Common diseases
When one-year-old seedlings or cuttings were injured, they first appeared wilting, water loss, dark leaf color, and the top of leaf branches bent downward, which was the most obvious in budding stage. The light ones can recover at night, the heavy ones will die in two or three days, the roots will rot, and the stems will turn brown and shiny. The wilting symptoms of seedlings over three years old appeared in the center or edge of the plant, gradually developed inward and outward, the branches wilted and died, and finally the whole plant died. The damage degree varied with plant age and varieties. It usually starts in May and reaches its peak in July and August. The disease of lavender in France was serious, and that of 2-417 in former Soviet Union was mild.
8. Reproduction
Lavender breeding methods mainly include sowing, cutting, layering and rooting.