Zone 4a monthly plan
August planting calendar for zone 4a
These actions use zone 4a's typical frost dates and each crop's extension-sourced planting window.
- Last spring frost
- May 12
- First fall frost
- September 28
- Exact actions
- 16
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 4a's typical frost window.
Showing 10 of 16 matching actions
Fall planting
8- Cabbage
vegetable
July 20 to August 24SourceUtah State University Extension - Cauliflower
vegetable
July 20 to August 24SourceUtah State University Extension - Kale
vegetable
July 27 to August 31SourceUtah State University Extension - Kohlrabi
vegetable
July 6 to August 3SourceIowa State University Extension and Outreach - Lettuce
vegetable
June 29 to August 3SourceUtah State University Extension
Harvest
8- Carrot
vegetable
June 30 to August 6SourceUtah State University Extension - Fennel
herb
July 11 to August 10SourceUtah State University Extension - Parsnip
vegetable
July 30 to August 26SourceUtah State University Extension - Pumpkin
vegetable
July 21 to September 23SourceClemson Cooperative Extension, Home & Garden Information Center - Romanesco
vegetable
July 26 to August 20SourceUniversity of Wisconsin-Madison Division of 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.