We have several chinese chestnut trees. To start them, seal them up fresh in a ziploc bag and leave them in the refrigerator about a year. To plant, I step on a golfball, replace it with a sprouted nut and cover with grass. Also put tin cans around it with a dusting of sulfur to keep out the critters. Always get some coming up under the trees, too. Some of the ones I've given away bore fruit in 2 yrs. That guy had tposoil 3' deep from other excavation. Most took around 8-10 yrs. Supposed to be good turkey feed, too.