Zone 6b monthly plan
May 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
- 32
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 May checklist
Search a crop or narrow the list by garden action. Dates are shifted from zone 6b's typical frost window.
Showing 12 of 32 matching actions
Transplant outdoors
18- Ageratum
flower
- Black-Eyed Susan
flower
- Cantaloupe
vegetable
- Cucumber
vegetable
April 23 to May 7SourceUniversity of Minnesota Extension
Direct sow
12- Cantaloupe
vegetable
- Cosmos
flower
April 23 to May 7SourceUtah State University Extension - Cucumber
vegetable
April 23 to May 7SourceUniversity of Minnesota Extension - Marigold
flower
- Mexican Sunflower
flower
Harvest
2- Kohlrabi
vegetable
May 15 to June 8SourceIowa State University Extension and Outreach - Radish
vegetable
April 27 to May 24SourceUtah 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.