MRBB,
I put in a plot myself this FALL and got the seed in on August 17th as well. Purple turnips came up quickly but I noticed during this cold spell over last two weeks growth has been stalled. Is this typical? I am in Berks County, PA. I did get the rain right after I planted but then we went almost two weeks in late August without rain until Labor Day. Let me know if you have any advice or thoughts.
Thanks!