California Size Standards

Peach and Nectarine Sizing

California’s peach and nectarine sizes are based on the number of pieces of fruit in the traditional two-layer box. For example, there are 56 pieces of fruit in a two-layer box of 56 size peaches or nectarines. Summerwhite® peaches and nectarines are often packed in one-layer boxes, in which the number of fruit per box is half that of a two-layer box. Double the one-layer box size to find its two-layer equivalent. The most common peach and nectarine sizes are 48, 56, 64, 72 and 80 (also 88 and 96 for nectarines only). The most common sizes in one-layer boxes are 18, 21, 24, 28 and 32.

As there are many different packages in use besides the two-layer box, the sizing system is regulated by a combination of weight and count – the maximum number of peaches or nectarines in a 16-pound sample, with weight-counts set for each size.

Fruit diameter can also give a general guide to a fruit’s size. An actual-size diagram of the approximate minimum diameter for common peach and nectarine sizes is shown here.

Peach

California Plum Sizing

California plum sizes are based on the number of plums in a 10-pound sample of fruit. The most common sizes are 30, 35, 40, 45, 50, 55, 60, 65 and 70. Divide the size by 10 to figure the number of plums per pound. To determine the total number of plums in the standard 28-pound volume-filled box, multiply the size by 2.8.

Size Maximum Plums Per 10 Lbs. Approx. Plums Per Pound Maximum Plums Per Box
20 20 2 56
25 25 2-3 70
30 30 3 84
35 35 3-4 98
40 40 4 112
45 45 4-5 126
50 50 5 140
55 55 56 154
60 60 6 168
65 65 6-7 182
70 70 7 196
80 80 8 252
90 90 9 252
100 100 10 280
120 120 12 336
140 140 14 392
170 170 17 476

*Box Size—28-lb. net weight volume-fill box.