For red culture methods and matters needing attention, shade in summer, heat preservation in winter, disease prevention in autumn, change pots for 2 years.

Soil: it is suitable for soil with loose fertility, good drainage and high humus. Watering: ensure humidity, but do not accumulate water. Fertilization: fertilizer and water should be sprayed 2-3 times from growing period to flowering period. Temperature: the suitable growth temperature is about 18-25 ℃, shade in summer, not less than 5 ℃ in winter. Disease control: mainly control spot disease in autumn. Note: pedicels should be cut off in time after flower fade, and pots and soil should be changed for 1-2 years in order to increase nutrients and fertility.

Red, also known as Zhu Dinghong, its bulb is enlarged, the shape is similar to spherical, the diameter is about 5cm-10cm, the outer skin is light green or yellowish brown, both sides of the leaf are opposite, the apex of the leaf is acuminate, and the leaf generally grows after flowering.

The culture method of red

1. Soil

For red soil, which is suitable for growing in sandy loam with loose fertility, good drainage and high humus, peat soil, rotten leaf soil, perlite and fine sand are generally selected to be mixed according to a certain proportion. pay attention to a comprehensive disinfection and sterilization of the soil with high temperature when potted.

2. Watering irrigation

High humidity is needed for the growing environment of red, so watering and irrigation should be carried out in the process of cultivation to ensure the humidity in the basin, but it should be noted that there can be no stagnant water, which will cause the bulb to soak in the stagnant water. Dormant to red in winter, you can reduce the number of watering to red, and the watering temperature should be about the same as room temperature, which can prevent frost damage to red.

3. Fertilizer application

It is necessary to spray fertilizer and water for 2-3 times during the period of red growth and flowering, specifically when the red leaves grow to 5cm-6cm, spray rotten cake fertilizer every 15 days, and spray once every 20 days after flowering, so that the bulbs can enlarge and grow into new bulbs.

4. Light temperature

Red likes a warm and humid climate, but it can not directly face the direct sunlight and exposure, because of the red growing in a strong ultraviolet environment, the leaves are easy to curl, how soft, and even yellowing and withering in serious cases, so it is necessary to provide proper shade in summer, and you can put the pair red in an indoor ventilated and shaded place.

The most suitable temperature for red growth is 18 ℃-25 ℃. If the color of red plant changes from bright red to dark red, it shows that the temperature for red growth is too low. In winter dormancy, the temperature of 10 ℃-12 ℃ is the best, and the lowest temperature should not be lower than 5 ℃. If it is higher than 15 ℃, it will affect dormancy and flowering in the coming year. In severe cases, the bulb will be directly frostbitten.

5. Disease and pest control

Red is a period of frequent occurrence of spot disease in autumn, which mainly harms leaves, flowers, scape and bulbs, and there will be fusiform or round brown spots. The diseased leaves can be removed first. When planting, the bulbs can be soaked in 0.5% formalin solution for 2 hours, and the same amount of Bordeaux solution can be sprayed regularly in the spring after planting, which can effectively control the spot disease.

Virus can also occur to red, which is easy to cause root rot and leaf rot. It can be sprayed with 75% chlorothalonil wettable powder 700x. If the leaf and stem flower have diseases, the nematode enters through the stomata on the leaf and flower stem. The bulb hair milk 43 ℃ can be soaked in warm water with 0.5% formalin for 3-4 hours before planting. The insect pest of red spider can be sprayed with 1000 times the concentration of dicofol EC.

Precautions for red

Cut off the pedicel in time after thanking the safflower, make the bulb fully absorb nutrients, let it enlarge and grow new bulbs, subtract it in order to concentrate nutrients on the bulb, and start changing pots after a year of growth for Hongsheng, because for red growing faster, the initial pot will become smaller for red, and the soil that has grown for 1-2 years will also be changed to new soil. Before the lack of soil fertilizer, continued use will affect the red in the new year's growth and flowering, in the change of pots, soil at the same time to cut off the previous withered roots, withered leaves, diseases and insect pests, leaving only exuberant leaves.