A planting pot (10) includes a straight cylinder part (11) and a diameter-enlarged part (12). The diameter-enlarged part (12) has a first end (121) and a second end (122). The first end (121) is connected to the straight cylinder part (11). The second end (122) is opposite to the first end (121). An outer diameter of the diameter-enlarged part (12) is gradually increased in a direction from the first end (121) to the second end (122). A planting holding plate (50) includes a plate body (40) and a plurality of planting pots (10). The planting pots (10) are connected to the plate body (40) and the planting pots (10) are arranged at intervals.
