We may be coming back to the times of the “Victory Garden”. With unemployment way up, perhaps some businesses could hire people for 9 or 10 months and pay them 12 months of salary at a reduced rate, so they can do some serious gardening and preserving for several months. There are some teaching situations already where the teachers can choose to work 10 months at full salary devided into 10, or work 10 months but get paid during 12 months at a 10/12th rate each month.
When the Little Ice Age began, it was rapid — the springs were cold with rain in torrents, destroyed the already-planted seed, and led to widespread famine. The areas high in latitude and/or altitude that had been supportive of farming during the Medieval Warming ceased to be, and remain so. Of course, most of us can have gardens, and the intensive method (”Square Foot Gardening” etc) would produce way more than we could use. Better not turn the excess into ethanol though, that’s just immoral. /jk