I went to sleep on Friday night thinking about a lot of things (kids soccer games, potato harvest, laundry -just to name a few). A killing frost was not even in my top 50. All forecasts during the week were for a stunning weekend (great soccer weather). Saturday morning I was up early to water and move sheep and repack the wheel hubs on the potato digger. I looked out across the pasture as the sun rose and knew I was in trouble. The light patches on the grass were frost and I immediately thought of just one thing -sweet potatoes. If it had been two weeks earlier my anxiety would have been diffused among many crops like tomatoes, peppers, cucumbers and tomatillos but all of these summer crops are done, leaving only one potential victim. Sweet potatoes are a true snow bird crop for us. The green shoots arrive by mail from Tennessee each June and we hurriedly harvest them before it gets frosty, never to few the cold. When that southern box arrives in the spring we rush them into the ground laid with black plastic for warmth. Most years we can harvest them before the September equinox but this year we put that off. Hoping a warm fall and some rain would bulk these tubers up, they were on our list to harvest next week. That is until Saturday morning. Sweet potatoes are in the same family as the morning glory and are sensitive to frost is a way few other crops are. When the cold comes their leaves turn black like most sensitive plants but the vines also begin to decay quickly and release a chemical that can travel into the tubers and cause them to rot very quickly. Nothing is so painful as loosing a crop below ground. We were able to harvest about half of the crop yesterday and cut the vines from the remaining tubers. While not our best harvest this looks like a solid crop -in spite of the change in the weather.