When can I plant Corn in Zone 1b

One of the best tools that we have as gardeners to help us determine our gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

The best time to plant corn in Zone 1b should be figured out by reviewing the USDA zone info.


Planting Calendar for Corn

Frost tolerance for corn: Not tolerant of frost.
When you should plant them: After the last frost when the weather gets warmer.

Corn are not cold tolerant which tells us that you need to wait until it warms up after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant corn
Possibly ok, but a risky time to plant corn
Probably not a good time to plant corn

The earliest that you can plant corn in Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant corn and expect a good harvest is probably July. You probably don't want to wait any later than that or else your corn may not have a chance to really do well. You can get started a couple of weeks earlier by starting your corn indoors.

Last Frost Date

On average all chance of frost has passed is on June 15 in Zone 1b. In the coldest months of winter we should expect an average low temperature of -55°F.

Remember that our actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Zone 1b and it can change quite a bit from year to year. Half of the time in Zone 1b there is a last frost after June 15 so make sure that you are ready to protect your corn in the event of a surprise late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.