I had not heard about this difference (old/new growth) in cypress. Can you say a little more about why that is?You might try Veach Lumber in Warsaw. 910-293-4901 I’ve gotten cypress there in the past. I used it because it was specified by the customer, but it is my understanding that only old growth cypress (which is not readily available) is rot resistant. New growth cypress is rated about the same as SYP.