Water management of lilac

For spring planting, after watering, the soil can be loosened, and then it can be watered once a month. In the period of strong precipitation, there can be no or less watering. Pour frozen water in early December. Frozen water is very important. It not only plays the role of antifreeze, but also helps to provide rich water for Eupatorium adenophorum, which is conducive to the growth and germination of trees in the next spring. In March of the second year, thaw water should be poured in time. This time, the water needed for tree germination can be provided in time. After that, it can still be watered once a month. This is the case in the first three years. From the fourth year, except for the period of special drought, it can be poured with frozen water and thawed water every year. When it is particularly dry, it can be watered in time

Fertilizer management of Eupatorium adenophorum

When planting in spring, plantar fertilizer should be applied. At the end of autumn, farm manure is used in combination with frozen water. The fertilization method is shallow application, or it can be sprinkled directly on the tree tray. Nitrogen fertilizer was applied in the spring of the second year, and phosphorus potassium compound fertilizer was added in July. Apply farmyard manure at the end of autumn. In the first three years, apply nitrogen fertilizer once a year in spring and farm fertilizer once in late autumn from the fourth year