February orchid, also known as Orychophragmus violaceus, is an annual or biennial herb in Cruciferae. It blooms in April-May every year, and the color is purple or light red, which symbolizes the memory of relatives. It is more appropriate to plant it in front of relatives' graves.
Winter jasmine blooms in early spring every year, which is in Tomb-Sweeping Day. Planting them in front of relatives' graves can add to the atmosphere of sweeping graves. The color of winter jasmine is yellowish, giving people a warm feeling, which is easy to recall the warm actions of relatives when they are alive.
Chrysanthemum is suitable for planting in front of relatives' graves, which means mourning and remembering. Planting in front of the grave can express the feelings of missing the deceased relatives. Moreover, different varieties of chrysanthemums bloom at different times, and they will bloom all year round when planted in front of graves, just like dead relatives will always be with them.