Zone 4a monthly plan
April 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
- 42
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 April checklist
Search a crop or narrow the list by garden action. Dates are shifted from zone 4a's typical frost window.
Showing 15 of 42 matching actions
Start indoors
18- Bitter Melon
vegetable
- Bok Choy
vegetable
March 31 to April 14SourceCornell University Home Gardening - Cucamelon
vegetable
March 31 to April 14SourceUniversity of Wisconsin-Madison Division of Extension - Cucumber
vegetable
- Fennel
herb
March 31 to April 14SourceUtah State University Extension
Transplant outdoors
7- Broccoli
vegetable
April 21 to April 28SourceUtah State University Extension - Cabbage
vegetable
April 21 to April 28SourceUtah State University Extension - Cauliflower
vegetable
April 28 to May 5SourceUtah State University Extension - Celeriac
vegetable
- Collards
vegetable
Direct sow
17- Beet
vegetable
April 21 to April 28SourceUtah State University Extension - Broccoli
vegetable
April 21 to April 28SourceUtah State University Extension - Cabbage
vegetable
April 21 to April 28SourceUtah State University Extension - Carrot
vegetable
April 21 to April 28SourceUtah State University Extension - Cauliflower
vegetable
April 28 to May 5SourceUtah 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.