Zone 3b monthly plan
August planting calendar for zone 3b
These actions use zone 3b's typical frost dates and each crop's extension-sourced planting window.
- Last spring frost
- May 17
- First fall frost
- September 23
- Exact actions
- 14
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 August checklist
Search a crop or narrow the list by garden action. Dates are shifted from zone 3b's typical frost window.
Showing 10 of 14 matching actions
Fall planting
5- Cabbage
vegetable
July 15 to August 19SourceUtah State University Extension - Cauliflower
vegetable
July 15 to August 19SourceUtah State University Extension - Kale
vegetable
July 22 to August 26SourceUtah State University Extension - Spinach
vegetable
July 15 to August 19SourceUtah State University Extension - Swiss Chard
vegetable
August 26 to September 2SourceUtah State University Extension
Harvest
9- Carrot
vegetable
July 5 to August 11SourceUtah State University Extension - Fennel
herb
July 16 to August 15SourceUtah State University Extension - New Zealand Spinach
vegetable
July 6 to August 2SourceUtah State University Extension - Parsnip
vegetable
August 4 to August 31SourceUtah State University Extension - Pumpkin
vegetable
July 26 to September 28SourceClemson Cooperative Extension, Home & Garden Information Center
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.