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.
Pin It. Time to germination: Several months, preferably overwintered. Time to harvest: 5 to 7 years. Light requirements: Full sun. Soil: Well-drained. Introduction. The chestnut is a great nut tree option for those with smaller plots of land to work with.