The development period of large cherry fruits is short, usually 30 to 60 days. The fruit development process can be divided into three stages: the first rapid period, the hard core and embryo development period, and the second rapid expansion period (rapid fruit expansion period).

The first long-term period starts after the flower fades and ends before the hard core. The main characteristics are that the ovary cells divide vigorously and the vascular bundles of the fruit stalk are well developed. At the end of this period, the fruit core grows to the size of the mature fruit, is white, and is not lignified. The endosperm also develops rapidly. This period lasts about 10 to 15 days, such as 11 days for Rabins, Pioneer, and Stella, and 15 days for Sparkle. The fruit size during this period accounts for 10% to 25% of the fruit size at harvest, such as Stella 25.51%, Pioneer 9%, and Labins 14.19%. The fruit growth during this period is characterized by the longitudinal diameter growth being greater than the transverse diameter growth.

The main characteristics of the hard core and embryo development stages are: the longitudinal and transverse diameters of the fruit grow slowly, the core gradually changes from white to brown and hardens, and the endosperm is gradually absorbed and consumed by the development of the embryo. This period takes about 8 to 20 days, such as 17 days for Stella, 12 days for Pioneer, and 13 days for Rabins. The actual increase in single fruit weight during this period accounts for less than 10% of the fruit size at harvest, such as 9.76% for Stella, 6.94% for Pioneer, and 6.5% for Labins. During this period, a stable supply of water must be ensured. Drought and waterlogging can easily cause a large number of young fruits to drop. The length of this period is the key period that determines how early or late the fruit will mature. The length of the fruit development period of early, medium and late maturing varieties is also mainly determined by this period. Even if the same variety has different lengths of fruit development period in different years, the main difference lies in this period.

The second fruit growth period is the period of rapid fruit enlargement, from the hard core to the fruit maturity. The main feature is that the fruit expands rapidly, and the growth in transverse diameter is greater than the growth in longitudinal diameter. The length of this period is about 3 weeks, such as 20 days for Stella, 21 days for Pioneer, and 21 days for Labins. If the fruit turns purple, it will take longer. The fruit growth during this period accounts for 70% to 90% of the fruit size at harvest, such as Stella 72.6%, Pioneer 90.6%, and Labins 74.8%. During this period, sufficient water and fertilizer supply and cooler climate conditions can make the fruits fully enlarged. If the weather is high during this period (around 25°C), it can reduce the amount of fruit expansion and ripen earlier. During the period when the fruit turns white to completely colored and mature, the enlargement is particularly obvious. However, heavy rain or flooding at this time can easily cause fruit cracking. Therefore, during this period, it is necessary to ensure sufficient water supply, keep the soil moisture from fluctuating, and increase the application of quick-acting fertilizers.