This came across my Facebook feed this morning from Mother Earth News. It may not be precise, but it’s a good start for preparing which veggies to plant in which month. February in Chicago may have freezing temperatures but it’s still a good time to transplant your asparagus or sow your mache seeds outside, according to this chart.
To use the chart, pick your region and then choose the month on the following page.
Compare the Mother Earth News chart to your planting zone as indicated by the 2012 USDA Plant Hardiness Zone Map. The zone map changes due to climactic variations; so if you’re in Chicago, for instance, your long-time zone of 5a may now be 5b. Do a zip code search here:
Keep in mind, both charts are only estimates and projections based on past data. Considering the strange weather the past two years, your guess is as good as mine on what to plant when. Happy growing!