Zone 3a monthly plan
August planting calendar for zone 3a
These actions use zone 3a's typical frost dates and each crop's extension-sourced planting window.
- Last spring frost
- May 29
- First fall frost
- September 5
- Exact actions
- 17
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 3a's typical frost window.
Showing 10 of 17 matching actions
Fall planting
5- Cabbage
vegetable
June 27 to August 1SourceUtah State University Extension - Cauliflower
vegetable
June 27 to August 1SourceUtah State University Extension - Kale
vegetable
July 4 to August 8SourceUtah State University Extension - Spinach
vegetable
June 27 to August 1SourceUtah State University Extension - Swiss Chard
vegetable
August 8 to August 15SourceUtah State University Extension
Harvest
12- Beet
vegetable
July 7 to August 3SourceUtah State University Extension - Carrot
vegetable
July 17 to August 23SourceUtah State University Extension - Cucamelon
vegetable
August 7 to August 12SourceUniversity of Wisconsin-Madison Division of Extension - Fennel
herb
July 28 to August 27SourceUtah State University Extension - New Zealand Spinach
vegetable
July 18 to August 14SourceUtah 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.