Abstract: The relationships among the height of plant, the time of bloom and the diameter of flower were studied under the same cultivation time and method. There is obvious relationship between the height of plant and the time of blooming. Most short types bloom earlier, and many high types bloom late. There is certain relationship between the diameter of flower and the height of plant. The big flower is more than the small one in the high types, but the small one is more than the big one in the short types. In addition, there is no clear relation between the diameter of flower and the time of blooming. No matter the variations are big, middle or small types, they are evenly distributing over earlier or later blooming types.