Zone 4a monthly plan

September 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: 2

Get dates for your exact ZIP

Zone averages cover wide areas. Your nearest NOAA station gives a more local frost window.

Exact September dates

Planting jobs

Your September checklist

Search a crop or narrow the list by garden action. Dates are shifted from zone 4a's typical frost window.

2 matching actions, with 2 shown first

Fall planting

Swiss Chard
vegetable
August 31 to September 7
0 sources

Harvest

Pumpkin
vegetable
July 21 to September 23
0 sources

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.