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.
When to harvest chestnuts? Chestnuts donât ripen at the same time and chestnut harvest time can span as much as five weeks, although the nuts generally ripen in a 10- to 30-day span of time in late August and September. Allow the nuts to fall from the tree naturally.
For the best quality and size, chestnuts should ripen on the tree until they fall, and then be picked up (harvested) promptly (the quicker the better). Nut drop usually occurs from mid-September through mid-October. They should not be shaken or knocked from the tree until the nut shells have turned brown.