California Code of Regulations
Title 3 - Food and Agriculture
Division 3 - Economics
Chapter 1 - Fruit and Vegetable Standardization
Subchapter 4 - Fresh Fruits, Nuts and Vegetables
Article 38 - Plums and Fresh Prunes
Section 1462.4 - Plums, Immaturity

After plums have been picked and stored for some time, they will increase in color. They do not increase in maturity regardless of the color, and therefore whenever a lot of plums arrives at the packing house and is immature, it must be reconditioned immediately. It would be impossible within a relatively short period of storage to determine which of the individual plums were immature unless sorting is done upon arrival at the packing house.

1. Renumbering from Section 1457 filed 1-21-75; effective thirtieth day thereafter (Register 75, No. 4).