1. One was developed by the Czech Variety Breeding and Cultivation Institute, and is a cross between Pioneer × Krupnoplodnaja as the parents. Krupnoplodnaja is a hard-fleshed, large-fruited cherry variety from Ukraine.

2. In 2013, Oregon State University introduced and promoted experimental planting. The variety's extra-large fruit is exciting growers in the Pacific Northwest. This variety is registered under the trademark name "Tamara" in the United States.

3. The main characteristics include: very rich juice, hard pulp, rich flavor, especially sweet, especially the super-large fruit, which is almost the largest among the main cherry varieties cultivated in various countries in the world.

4. Propagation by division is a commonly used method for raising cherry seedlings in China, and large seedlings can be grown in the same year. Three methods are often used in production: soil layering, horizontal layering and direct division.

5. In late autumn or early spring, pile a 30-50 cm high mound of soil at the base of the selected mother tree to allow the sprouts at the base of the trunk to take root and form new plants. In the following autumn or the third spring, cut off the rooted plants and plant them directly in the garden or use them as rootstocks.

6. Generally, each mother tree can obtain 5-10 new seedlings every year.