When compared to cherry tree variety named ‘PC 7144-7’, known and marketed as “Tieton” (U.S. The new variety is similar to both parental varieties in exhibiting a medium early blooming time, but differs from its parental varieties in fruit ripening time, fruit firmness, and S-alleles. The phenotype may vary with variations in environment without a change in the genotype of the plant. The present invention has not been evaluated under all possible environmental conditions. The new variety has been trial and field tested and has been found to retain its distinctive characteristics and remain true to type through successive propagations. The new variety was first asexually reproduced via cuttings in Baden-Wuerttemberg, Germany in 2006. The purpose of the breeding program was to produce high quality fruits with an early ripening time.

The new variety was discovered in Baden-Wuerttemberg, Germany as the result of planned breeding between cherry tree variety named ‘Sweet Early’ (female parent, unknown patent protection) and an unnamed and unpatented cherry tree variety as the male parent. The present invention comprises a new and distinct variety of sweet cherry tree, botanically known as Prunus avium L., and referred to by the varietal name ‘Prim 31’.

Botanical classification: Prunus avium L.

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