The freeze last night got southwestern Michigan as well as the Chicago area away from the city proper. Mick Klug, who sells fruit at Lincoln Square, Green City and Lincoln Park along with other markets, told me this morning that it hit 27 degrees at his farm in Berrien County and that his field help told him this morning that the raspberries were frozen solid. It is pretty clear that the selection at farmers markets will be decreasing rapidly this week.
Some of the outlying Illinois areas had moderate frost over the weekend with heavier frost Monday night.
A side effect is that a freeze improves the flavor of kale, Brussels sprouts and parsnips.