Zone 9b monthly plan
December planting calendar for zone 9b
These actions use zone 9b's typical frost dates and each crop's extension-sourced planting window.
- Last spring frost
- February 1
- First fall frost
- December 9
- Exact actions
- 37
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 December checklist
Search a crop or narrow the list by garden action. Dates are shifted from zone 9b's typical frost window.
Showing 8 of 37 matching actions
Start indoors
34- Ageratum
flower
November 23 to December 7SourceUniversity of Wisconsin-Madison Division of Extension (Wisconsin Horticulture) - December 7 to December 21SourceClemson Cooperative Extension, Home & Garden Information Center
- Bachelors Button
flower
December 7 to December 21SourceNorth Carolina Extension Gardener Plant Toolbox (NC State Extension) - Basil
herb
December 7 to December 21SourceUniversity of Minnesota Extension - Bok Choy
vegetable
December 21 to January 4SourceCornell University Home Gardening
Transplant outdoors
1- Kale
vegetable
December 28 to January 4SourceUtah State University Extension
Direct sow
1- Kale
vegetable
December 28 to January 4SourceUtah State University Extension
Fall planting
1- Garlic
vegetable
December 16 to December 23SourceUniversity of Minnesota 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.