Here's a picture of some sawtooths at camp. The one on the left end of the cabin with the green roof drops in early to mid September. The one on the right end of the other cabin drops in Early to mid October, and the one just to the right of it is my latest one, often dropping acorns as late as Nov. 15. The early dropper is the youngest of the three. I think it is only around 8 years old and was started by planting an acorn right where it is. The other two are close to 10 years old I think. I never recorded the dates I planted stuff, but I know they aren't more than 10. The early dropper tends to drop all its acorns within a week to ten day period. The other two take much longer, trickling off.