1. Apple planting time is in mid-April in spring and early October in autumn. The survival rate of apple trees planted at this time is higher and the seedlings develop well. However, in the mountainous areas of northern Yan'an and areas with strong winds and droughts in winter, spring planting is more suitable. Spring planting is usually before mid-April. The sowing time of autumn apple trees should be as early as possible, and it is suitable to sow in early October. Apple planting time in the south: The temperature in the south is higher, and apples like cooler climates and are not suitable for planting. Apple planting time in the north: Apples in the north can be planted from after the trees have fallen leaves in autumn to March of the following year, but they need to be covered with mulch or grass in winter.

2. Soil. Apples like moist soil, but are afraid of waterlogging, so they need to choose soil with good drainage and air permeability, preferably rich in humus, so that there is no need to apply fertilizer in the early stage and it will have sufficient nutrients to promote growth.

3. Lighting. Apples like an environment with sufficient sunlight, which can promote the differentiation of flower buds, facilitate normal growth and fruiting, and improve the quality of the fruit. However, avoid direct sunlight to avoid dead leaves on the plant.

4. Temperature and humidity. Apple trees are temperate fruit trees that like low temperature and dryness. They require no severe cold in winter and no scorching heat in summer. The suitable temperature range is the annual average temperature of 9 to 14°C, the extreme low temperature in winter is not lower than -12°C, and the highest monthly average temperature in summer is not higher than 20°C. The temperature difference between day and night should be large. If the climate is relatively dry, you need to spray water around the plants and leaves to maintain air humidity.