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.
Step 5. Make your own seed starting mix for horse chestnuts by mixing compost and potting soil together to make a 50/50 compost/soil mix. Moisten the compost/soil mix with water and fill the 1-inch pots to the top.