Free planting calendars
What to plant now, by zone and month
Pick your USDA hardiness zone, the growing zone set by the United States Department of Agriculture, and a month. Every list is built backward and forward from that zone's average frost dates, not from a generic spring calendar.
Zone 7b: last spring frost around April 5, first fall frost around November 5 (5 to 10 °F).
These are zone-average dates. Check an area-level frost estimate from thirty years of nearby weather history and this calendar retimes itself.