In Missouri, the recommended time to plant pumpkins outdoors is generally around May 10, after the danger of frost has passed and the soil has warmed sufficiently. By this date, soil temperatures should be above 60 degrees Fahrenheit, which is optimal for pumpkin seed germination and growth. In southern parts of Missouri, planting might be possible slightly earlier if there has been no frost for about two weeks by late March or April, but typically mid-May is safest for most areas. It's important to wait until the soil is thoroughly warmed to avoid cold damage. Early June is also suggested by some sources for planting pumpkins in Missouri to ensure good growth conditions. For pumpkins intended for fall harvest such as Halloween, planting seeds or seedlings from late May through early July can also work, considering the growing season length and desired harvest time. In summary:
- Safest starting point around May 10 after frost danger has passed.
- Soil temperature should be at least 60°F.
- In southern Missouri, possibly plant earlier if frost-free.
- Late May to early July planting for fall harvest pumpkins is common.
This timing allows pumpkins to mature well before the cooler fall temperatures begin affecting their growth.
