The optimum growth temperature of asparagus is about 20℃, and the winter temperature is above 65438 00℃. Frostbite may occur if the temperature is too low. When the weather is too cold in winter, you can cover the potted plants with a plastic film to keep warm. In addition, the higher the air humidity, the better. In hot weather, water is often sprayed on the ground and leaves around plants to increase air humidity.
The soil should be loose and fertile. Asparagus requires high drainage and air permeability of soil, so it is best to choose humus soil, peat soil and other loose soil with good drainage. Adding a small amount of organic fertilizer as base fertilizer in soil is beneficial to plant growth. Asparagus can't be cultivated outdoors in winter in the north, so it should be moved indoors in time to provide a warm growing environment.
Asparagus should not be watered too often, and it can be kept moist by spraying water on the leaves. Spray water 1-2 times a day in summer. Spray water every 3-4 days in winter. Don't water directly with tap water. It is necessary to air 1-2 days in advance to release chlorine in the water to ensure that the water temperature is not too cold.
cultivation techniques
Potted asparagus is usually mixed with 1 humus soil, 2 parts garden soil and 1 river sand as the base material, and a small amount of decomposed animal manure is added as the base fertilizer when planting. The key problem in its cultivation management is watering. Too much watering can easily cause root rot and yellow leaves to fall off. If there is too little water, the soil in the basin is too dry, which will easily lead to yellowing of the tip and leaf falling off.
When the weather is hot, in addition to watering the pot soil, we should also often spray water on the leaves to improve the air humidity. After winter, the amount of watering can be reduced appropriately. Apply dilute liquid fertilizer 1-2 times a month during the growth period, and avoid applying thick fertilizer, otherwise the branches and leaves will turn yellow. In plant modeling, we can reduce the amount of fertilizer, avoid unnecessary growth and affect the beautiful modeling of plants, and at the same time pay attention to proper pruning and modeling.
Suitable for growing in a semi-cool and ventilated environment, pay attention to proper shading, especially in summer and autumn to avoid direct sunlight and yellow leaves. It is best to cultivate in a place with a certain diffuse light indoors.