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.
Planting jobs
Your April checklist
Search a crop or narrow the list by garden action. Dates are shifted from zone 4a's typical frost window.
42 matching actions, with 15 shown first
Start indoors
18- Bitter Melon
vegetable
April 140 sources
- Bok Choy
vegetable
March 31 to April 140 sources
- Cucamelon
vegetable
March 31 to April 140 sources
- Cucumber
vegetable
April 140 sources
- Fennel
herb
March 31 to April 140 sources
Show 13 more start indoors
- French SorrelApril 21
- Ground CherryMarch 24 to April 14
- LettuceMarch 31 to April 7
- MarigoldMarch 31 to April 14
- MoonflowerMarch 31 to April 14
- NasturtiumMarch 31 to April 14
- New Zealand SpinachApril 14 to April 21
- RomanescoMarch 31 to April 14
- SpinachMarch 31 to April 7
- Sweet AlyssumMarch 31 to April 7
- Swiss ChardMarch 31 to April 7
- TomatilloMarch 24 to April 14
- TomatoMarch 31 to April 7
Transplant outdoors
7- Broccoli
vegetable
April 21 to April 280 sources
- Cabbage
vegetable
April 21 to April 280 sources
- Cauliflower
vegetable
April 28 to May 50 sources
- Celeriac
vegetable
April 280 sources
- Collards
vegetable
April 280 sources
Show 2 more transplant outdoors
- Globe ArtichokeApril 14 to April 21
- KaleApril 7 to April 14
Direct sow
17- Beet
vegetable
April 21 to April 280 sources
- Broccoli
vegetable
April 21 to April 280 sources
- Cabbage
vegetable
April 21 to April 280 sources
- Carrot
vegetable
April 21 to April 280 sources
- Cauliflower
vegetable
April 28 to May 50 sources
Show 12 more direct sow
- CollardsApril 21
- KaleApril 7 to April 14
- KohlrabiApril 14 to April 28
- LettuceApril 21 to April 28
- Mustard GreensApril 21 to May 12
- ParsnipApril 21 to April 28
- PotatoApril 21 to April 28
- RadishApril 21 to April 28
- SpinachApril 14 to April 21
- Sweet AlyssumApril 14 to April 28
- Swiss ChardApril 14 to April 21
- TomatilloApril 28
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.