Zone 6b monthly plan
March planting calendar for zone 6b
These actions use zone 6b's typical frost dates and each crop's extension-sourced planting window.
- Last spring frost
- April 23
- First fall frost
- October 22
- Exact actions
- 36
Get dates for your exact ZIP
Zone averages cover wide areas. Your nearest NOAA station gives a more local frost window.
Source-backed actions
Your March checklist
Search a crop or narrow the list by garden action. Dates are shifted from zone 6b's typical frost window.
Showing 12 of 36 matching actions
Start indoors
29- February 26 to March 12SourceClemson Cooperative Extension, Home & Garden Information Center
- Bachelors Button
flower
February 26 to March 12SourceNorth Carolina Extension Gardener Plant Toolbox (NC State Extension) - Basil
herb
February 26 to March 12SourceUniversity of Minnesota Extension - Bitter Melon
vegetable
- Bok Choy
vegetable
March 12 to March 26SourceCornell University Home Gardening
Transplant outdoors
2- Globe Artichoke
vegetable
March 26 to April 2SourceUtah State University Extension - Kale
vegetable
March 19 to March 26SourceUtah State University Extension
Direct sow
5- Kale
vegetable
March 19 to March 26SourceUtah State University Extension - Kohlrabi
vegetable
March 26 to April 9SourceIowa State University Extension and Outreach - Spinach
vegetable
March 26 to April 2SourceUtah State University Extension - Sweet Alyssum
flower
March 26 to April 9SourceNC State Extension (North Carolina Extension Gardener Plant Toolbox) - Swiss Chard
vegetable
March 26 to April 2SourceUtah State University Extension
How this checklist is sourced
USDA defines the hardiness zone, NOAA normals provide the typical frost anchors, and each crop's extension source supplies the planting offset. Broad season-only notes are kept on plant profiles because they do not change from one zone page to another.
- USDA Plant Hardiness Zone Map, 2023 by USDA Agricultural Research Service / Oregon State University PRISM Group. the USDA hardiness-zone band.
- U.S. Climate Normals 1991-2020 by NOAA National Centers for Environmental Information. the median spring and fall freeze dates.
Local conditions vary.