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.
Weevil grubs emerge from chestnuts shortly after harvest, but the. problem begins before the chestnuts ripen. Adult weevils lay tiny eggs. inside the shell, while the nuts are still on the tree. After hatching, the. grubs eat tunnels through the nut kernel. Sometime after nut drop, they. eat their way out through the shell, leaving pencil lead-sized exit holes in. the shell.