Pumpkin Center, Kern County, California. This article is about the unincorporated community in Kern County. For the unincorporated community in Lassen County, see Pumpkin Center, Lassen County, California.
Harvesting Chestnut Trees. After the chestnuts fall from the tree, watch for the spiny burs to split. Donât harvest chestnuts if the burs are still green and closed because the nuts inside will be unripe. Harvest the nuts every couple of days.
How to Harvest Walnuts. Depending upon the variety and region they are grown in, walnut tree harvesting starts from early September to early November. At this point, the kernels are light in color and the membrane between the halves has turned brown. To determine if your nuts are ready for harvest, crack a few open.