Zone 8b monthly plan
March planting calendar for zone 8b
These actions use zone 8b's typical frost dates and each crop's extension-sourced planting window.
- Last spring frost
- March 17
- First fall frost
- November 14
- Exact actions
- 67
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 8b's typical frost window.
Showing 11 of 67 matching actions
Transplant outdoors
29- Ageratum
flower
- March 17 to March 31SourceClemson Cooperative Extension, Home & Garden Information Center
- Black-Eyed Susan
flower
- Broccoli
vegetable
February 24 to March 3SourceUtah State University Extension - Cabbage
vegetable
February 24 to March 3SourceUtah State University Extension
Direct sow
37- Basil
herb
- Beet
vegetable
February 24 to March 3SourceUtah State University Extension - Bok Choy
vegetable
- Borage
herb
- Broccoli
vegetable
February 24 to March 3SourceUtah State University Extension
Harvest
1- Radish
vegetable
March 21 to April 17SourceUtah 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.