When I planted the past couple of days, the weather indicated a slight chance of patchy frost for Wednesday night. This morning, the frost was out of the forecast, which I expected. I checked again this afternoon before I went out to finish my planting, and this appeared:

Chilly Temps May Affect Sensitive Plants Tonight

Unseasonably chilly temperatures and potential frost tonight into early Thursday may affect sensitive outdoor plants, especially in locations near and north of I-80, away from the Chicago urban core. Take steps to protect tender plants from the cold!

So, I went out and spent the afternoon covering all of the plants.

Tomorrow will tell if this worked…