The walnut output in California in 2018 is expected to reach the new high record 690,000t, 10% up compared to the 630,000t in 2017. This prediction is made based on objective detection and investigation on California walnuts in 2018, which is lasted from Aug. 1 to Aug. 21, 2018.

The precipitation in late Spring offered a cooler environment, and improved size of walnut kernel and crop quality. The data of survey on 726 farms, with two sample trees in each farm, shows averagely every tree bears 1176 walnut fruits, 3% higher than the mean value 1141 in 2017.

The data in aforesaid figure shows the variation trend of walnut bearing acreage and bearing trees per acre in California. As of 2018, the bearing acreage in California is about 340,000 acre (about 2.06 million mu), and about 75 walnut trees are planted averagely per acre.

In the entire state, 98.8% results are complete walnuts with shell. The weight of every walnut with shell is about 22.3g.