1. First, choose a flowerpot for planting apple trees, preferably a round tile tray, as shown in the figure below.

2. There should be several finger-sized holes at the bottom of the tray for drainage and ventilation, as shown in the figure below.

3. Then choose loose and fertile soil, as shown in the figure below.

4. You can add some river sand and fertilizer appropriately, as shown below.

5. Then prune the apple trees planted in the tray reasonably, as shown below.

6. When the soil is dry, replenish water in time, as shown in the figure below.

7. completely dump the soil. Don't water it with big water, and don't water it repeatedly, as shown below.