What to plant in May, zone 4b
In zone 4b, the typical last spring frost is May 8 and the first fall frost is October 1. Here is your May checklist.
Transplant outdoors
Move these out to the garden this month:
- CantaloupeMay 8 to May 22
- CauliflowerApril 24 to May 1
- CucumberMay 8 to May 22
- DahliaMay 8 to May 22
- EggplantMay 8 to May 22
- English LavenderMay 8 to May 22
- LettuceMay 8
- MarigoldMay 8 to May 22
- PepperMay 8 to May 22
- PetuniaMay 8 to May 22
- SpinachMay 8
- Swiss ChardMay 8
- TomatoMay 8 to May 22
- WatermelonMay 8 to May 22
Direct sow
Sow these straight into the ground this month:
- BasilMay 8
- CantaloupeMay 8 to May 22
- CauliflowerApril 24 to May 1
- CucumberMay 8 to May 22
- DillMay 8
- Green Bean (Snap Bean)May 1
- MarigoldMay 8 to May 22
- ParsleyMay 8
- PumpkinMay 8 to May 22
- SunflowerMay 8 to May 22
- Sweet CornMay 8 to May 22
- WatermelonMay 8 to May 22
- Winter SquashMay 8 to May 22
- ZucchiniMay 8 to May 22
Harvest
Expect to harvest these this month:
- RadishMay 12 to June 8
Want your exact dates?
These are zone 4b averages. Enter your ZIP for a calendar built on your nearest weather station.
Open the planting calendarUSDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service / Oregon State University PRISM Group. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020. Zone dates are medians; local conditions vary.