Zone 8b monthly plan
March planting calendar for zone 8b
These actions use zone 8b's typical frost dates and each crop's extension-sourced planting window.
- Last spring frost
- March 17
- First fall frost
- November 14
- Exact actions
- 67
Get dates for your exact ZIP
Zone averages cover wide areas. Your nearest NOAA station gives a more local frost window.
Planting jobs
Your March checklist
Search a crop or narrow the list by garden action. Dates are shifted from zone 8b's typical frost window.
67 matching actions, with 11 shown first
Transplant outdoors
29- Ageratum
flower
March 17 to March 310 sources
- March 17 to March 31
0 sources
- Black-Eyed Susan
flower
March 17 to March 310 sources
- Broccoli
vegetable
February 24 to March 30 sources
- Cabbage
vegetable
February 24 to March 30 sources
Show 24 more transplant outdoors
- CantaloupeMarch 17 to March 31
- CauliflowerMarch 3 to March 10
- CeleriacMarch 3
- CollardsMarch 3
- CucumberMarch 17 to March 31
- DahliaMarch 17 to March 31
- EggplantMarch 17 to March 31
- English LavenderMarch 17 to March 31
- French TarragonMarch 17
- Globe AmaranthMarch 17 to March 31
- Ground CherryMarch 17 to March 31
- ImpatiensMarch 17 to March 31
- LettuceMarch 17
- MarigoldMarch 17 to March 31
- PepperMarch 17 to March 31
- PetuniaMarch 17 to March 31
- RomanescoMarch 17
- SpinachMarch 17
- Sweet AlyssumMarch 10 to March 17
- Swiss ChardMarch 17
- TomatilloMarch 24 to March 31
- TomatoMarch 17 to March 31
- WatermelonMarch 17 to March 31
- Wax BegoniaMarch 17 to March 31
Direct sow
37- Basil
herb
March 170 sources
- Beet
vegetable
February 24 to March 30 sources
- Bok Choy
vegetable
March 170 sources
- Borage
herb
March 170 sources
- Broccoli
vegetable
February 24 to March 30 sources
Show 32 more direct sow
- CabbageFebruary 24 to March 3
- CantaloupeMarch 17 to March 31
- CarrotFebruary 24 to March 3
- CauliflowerMarch 3 to March 10
- CosmosMarch 17 to March 31
- CucamelonMarch 17
- CucumberMarch 17 to March 31
- DillMarch 17
- FennelMarch 17
- German ChamomileMarch 10 to March 17
- Green Bean (Snap Bean)March 10
- KohlrabiFebruary 17 to March 3
- LettuceFebruary 24 to March 3
- Luffa GourdMarch 17
- MarigoldMarch 17 to March 31
- Mexican SunflowerMarch 17 to March 31
- Mustard GreensFebruary 24 to March 17
- NasturtiumMarch 17 to March 31
- New Zealand SpinachMarch 17 to March 24
- ParsleyMarch 17
- ParsnipFebruary 24 to March 3
- PotatoFebruary 24 to March 3
- PumpkinMarch 17 to March 31
- RadishFebruary 24 to March 3
- SunflowerMarch 17 to March 31
- Sweet AlyssumFebruary 17 to March 3
- Sweet CornMarch 17 to March 31
- Sweet MarjoramMarch 17
- TomatilloMarch 3
- WatermelonMarch 17 to March 31
- Winter SquashMarch 17 to March 31
- ZucchiniMarch 17 to March 31
Harvest
1- Radish
vegetable
March 21 to April 170 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.